/ptg/ - Private Tracker General

Just leech and shut up.
Communismnity edition.

Old thread: >New to /ptg/? Have an inquiry? Consult the wiki or the PDF before asking redundant questions
wiki.installgentoo.com/index.php/Private_trackers
a.pomf.cat/ameuju.pdf

>If you have a question check Google and if you can't find an adequate answer, ask here.

>What.CD interview info:
whatinterviewprep.com/ and the wiki

>Various tracker IRCs and sites open for signup:
pastebin.com/dD3cqWKc

Use as a link to find the /ptg/ thread.

Remember the following:
>staff occasionally read these generals and have posted here before
>staff may pretend to be normal users asking for invites and when you invite them, they ban you for inviting strangers
>sneaky bastards will try to convince you into believing that cheating can be evaded, it can't and you will be banned with those bastards laughing at you
>people may report emails and other personal info posted here to staff to get you banned
>most of the invite offers here are people trolling you with false hope - begging for invites is a waste of time and you should just interview at What.cd

Other urls found in this thread:

opentrackers.org/
reddit.com/user/in10city
reddit.com/r/IAmA/comments/chonr/iaman_antipiracy_guy_at_a_major_movie_studio_ama/c0sn3dr
whatismyreferer.com/
sys.Cred
twitter.com/SFWRedditVideos

>when you reach PTP

first for fuck leechers

3rd for FSC

What's the difference between GGn and BCG?
I'm part of GGn and i'm curious. If none of us here are in both of the trackers to compare them directly, I can explain GGn and see what it's like to your description of BCG.

GGn is Gazelle therefore better

Any good tracker for idol/japanese variety TV-shows? Avistaz and nyaa checked, they lack

Lol freak

What is the best general tracker with a focus on movies and TV?

As if you could get in.

GGn
>Torrents: 44,911
BCG
>Torrents: 21,890

GGn is basically better at everything but it's easier to survive on BCG because of some weird BP shit that refunds your download if you seed long enough.

sweet dubs

You're a big guy

First for HDB OR DIE TRYING

I'm fine on ptp, they have a bigger selection anyways ;)

The upload form on BTN is complete trash.

PTP is also a must have but no HDB = no party

What

bump from old thread

PTP and BTN are great but PTP+BTN+HDB is a whole other level m8

>implying HDB internal encodes don't get uploaded to PTP right away anyway

Don't HDB and ptp have the same content?

>arguing with HDB wizard himself

Do they or don't they, answer the question.

>implying PTP has everything that's on HDB
holy shit these gazelle-cucks are unbelievable

HDB doesn't have SD content so it's worthless.

Implying any of you would have any trouble finding your movies/shows elsewhere. If they are worth it they will be uploaded to other trackers.

PTP has more content than HDB.

I thought the epeen circlejerk in these threads was a joke, but some of you faggots are actually serious.

Any reason to rank up on AB past PU?

>le SD meme
stop it. just look at SDBits: it's like that slower brother that everyone feels sorry for while being uncomfortably ashamed of

>If they are worth it they will be uploaded to other trackers
that's exactly the same kind of thinking that you find on IPT and other scum-tier sites.

Why would I look at SDBits when I can look at PTP and BTN? They're doing fine and have SD content.

It's also really easy to survive on GGn if you autosnatch torrents as they're uploaded. I started like two months ago and now I have almost a 4TB buffer.

> i have WCD, TehC, x264.me
>i also have access to top notch indexer
Im set for life. What about you?
>inb4 paying to pirate
I paid 6 dollars for the indexer and im using free trials from usenet providers. Stay mad.

>tfw on OT
>tfw /setforlife/

>tfw another ptg meme you created gets big

Some loser on reddit messaged me for a WCD invite. What do?

what indexer? teach me, user

mark him good

Say that you reported him to the WCD staff.

ok, I will do this. btw he tried to show me proofs for freshon.tv and privatehd

wut

>privatehd
kek.

nzbgeek and dognzb

>ywn be Overlord on BTN and have maximum epeen

How can I get access to a ftp server with 0day stuff, p2p is shit. I don't mind paying

...

sick quads famalam

Tell him that he IP, MAC, and other info has been logged and he has been permanently marked and blacklisted from any cabal tracker

...

NICE TRY NSA

Nah rly not nsa

This is something a NASA agent would say

I'd actually be ashamed of being overlord on BTN.
What kind of no-life data-hoarding faggot goes through all that bullshit for a rank without any actual privilege.
It's not even e-peen, that's what the VIP rank is for.

Best windows bitorent client? Deluge??

>What kind of no-life data-hoarding faggot goes through all that bullshit for a rank without any actual privilege
Have you forgotten where you are?

Do /ptg/ members meet up anywhere?

Not really m8. Quality autism is more than ok, it's something from which the userbase ultimately benefits from.
That shit is just straight up mental issue shit, just look at that one faggot who actually snatched tens of thousands of small files manually while also auto-snatching a bunch of new releases to pump and dump them after few hours of seeding.
Nobody likes that shit, it doesn't do the site any good and as I said, it's not even e-peen.

How long have you guys been involved in Private trackers? I feel like such a nub, having only gotten into WCD under a year ago. I hear stories of guys in all the top trackers from over 10 years and are essentially set for life. Kind of makes me wish I had gotten involved in the community earlier.

your mama's house. great connection, takes that load like it's nobody's business, what a whore

How would I go about migrating my torrents on Transmission-qt over to Deluge? It's only about 52 torrents but I don't have the original .torrent files

Well yeah there's people with 10+ year old HDB accounts which is cool and all but there's nothing to worry about if you're just starting now.
Just remember there's no rush but to invest your time/resources well to get into private trackers that are actually worth it (PTP, BTN, Emp, Bib, HDB and very few others)

8 years now

>Joined: 1 year, 7 months ago
I'm on WCD/PTP/BTN and pretty much set for life. The grind was fun.

And what about trackers that are a tier below those mentioned. Where should I get my content in the meantime? I'm trying to ween myself away from IPT. I wish I had never even joined in the first place.

How'd you get onto BTN, from PTP?

i don't get it
what is ipt?

From WCD more than a year ago.

Interracial Party Time

IPTorrents, blacked user hehe xD

Don't worry and don't listen to faggots, IPT is shady but it's always a good backup to have: fast scene releases plus super easy it is to build buffer and basically no hit-n-runs (easy points).
You're in WCD? My advice is don't bother with any lower-tier movie tracker like TehC or AHD unless you really can't wait. Get into PTP and use that as main tracker.
PTP is great because if you climb there you can get pretty much anywhere.

That's not possible..the thread has been closed for almost two years now

Thanks for the advice. I'm PU on WCD so im still waiting to hear back from the recruiter of PTP. Any advice on how to survive on PTP?

What is IPT? What is WCD?

There was a thread in the Elite forum last summer. I remember I joined in July.

Do you think you're cute or funny?

What the fuck are you talking about?
Just tell me what it is.

Surviving on PTP is much easier than WCD.
To build buffer: grab freeleech Golden Popcorns, daily freeleech user picks and half leech film club picks
To get bonus points: seed as much as you can, especially torrents with very few seeders

read the wiki faggot

No there wasn't. I'm Eliteâ„¢ and i've never seen a thread. But then again, i've joined BTN 4 years ago so never really paid much attention

Bitch are you serious?

What.cd invite

>not showing anything that could identify the screenshot as being from what.cd
nice try :^)

what exactly is cabal?

Whatever.

>gets BTFO'd
>"whatever"
jej

if anything you are the one who got BTFO'd but ok.

What if I am a starter and I don't know anything about trackers?

either join what through the interview or check here for trackers with open signup.

opentrackers.org/

>he's not on BTN

i want to download games

gazellegames.net

I think gazellegames still have application signup but im not 100 % sure. could be worth checking out.

what's up with the Q and A?

paranoia

>laughs at noobs for not having a BTN account
>he's not on HDB
you ain't shit nigga, I pop curry ass motherfuckers like you on a daily basis

Wow you're autistic as fuck

they do!

New GPs going up.

Heroes in a half shell
Turtle Power

what are they afraid of?

WCD PICKS HOTTTTTT

WHICH PICKS SHOULD I DOWNLOAD?!?!

Currently uploading at 180MB/s :DDDD
Fuck them ratio cucks

I first joined BTN 3 years ago, when it had open signup

PYRAMID ALERT PYRAMID ALERT

WHAT PICKS WHAT PICKS

>seedbox cuck

If motherfucking transmission-daemon CRASHING FUCKING AGAIN IM GOING TO LOSE MY SHIT

>WCD PRICKS HOTTTTTT
>WHICH PRICKS SHOULD I DOWNLOAD?!?!

Yes, that's what those two posts say.

It's a beautiful site to see this after a WCD pick

/PYRAMID/ ALERT

NEW WHAT CD PICK

AHHHHHHHHHHHHHHHHHHHHH!

that's mediocre at best. I already got 50+ GB

This is on my home connection though :/ my upload is 11Mbps. Cant afford a seedbox

>using the smiley with a carat nose

:o)

this sounds better will do this now or ask nudes of his wife?

Asking for nudes may detract from any "credibility" he sees in you. Better hold off on that. Post any keks you get here please

>tfw just need 6 months to pass and still downloaded all picks :^(

Who /comfy/ as fuck here?
>slowly climbing the pyramid of epeen
>WCD picks came out today
>nice weather outside

...

This is the Proof he sent you??

if any staff is lurking he asked me for a WCD invite.

>Kidstuff

Yes.

bro y u fuck him up like dat? he trusted ya. ya could have just told him to fuck off and take the interview

>Age 43
>has kids
>stupid enough to post passkey in plain sight

user, don't ruin this guys online torrent life. I feel kinda bad for him

But... what's his Reddit username?

what's with the Freeleech torrents on what?

Yeah, I don't even know the guy. and of course want to share with familia

>fuck up his torrent life
>he's on freshon

most of what he wants could prob get on public trackers

what do you mean? :)

I live in the same city as this guy. Weird

What's his reddit account, just curious.

i've played the ratio game on WCD for too long. this time i literally snatched every single freeleech pick with a 1Gbps seedbox, it's time to put an end to this upload-cuck shit.

hey guys I know you're busy tormenting and all, but did you remember to do everything this morning? Surely, there's something you forgot to do. For instance, I forgot to feed my cat.

Just a helpful reminder :^)

>tfw too lazy/technologically inept to migrate your WCD content to a Seedbox and be done with What cuckery.

Oh well. I'm in no hurry to get What Elite

>tfw 20 minutes late to freeleech picks

Oh shit. I forgot to pick my wife's kid up from daycare.

Guess, and your best guess will be correct.

It's fucking Sunday

>a Seedbox
>PAY TO LEECH?
>Drink some bleach!

Right, i should've tried that
reddit.com/user/in10city

>using the smiley with a circle nose
>using the smiley with a carat nose

What are you? The emoticon Nazi?

Yea, we have that...
Is it cool?

These threads can be pretty comfy when someone isn't bullying you for not having a BTN account

agreed.

>tfw soon to be Torrent Master
pls god

I downloaded DOOM from a pirate bay link with a public tracker and my ISP forwarded a warning for some copyright company. I'm not being fined, but I guess because of new Canadian laws I have to be more careful about pirating north american games.

How hard is it to get into this private tracker stuff? Or should I just buy games now?

if you're just looking for games gazellegames has open application signup right now.

Apply to gazellegames.net

Getting into GGn is pretty easy and its a comfy first tracker, they might even still have open applications

gazellegames.net

What trackers are non-nazi when it comes to ratio? I don't need super exclusive shit cuz I have shit internet, so I can't seed unlimited without my home network tearing itself apart. I have to limit uploads to 50kB/s, then it's stable.

Anyone know a name so I can do further research? That would be great.

>I'm not interested in your bragging or your mocking comments, so please rise above it, thanks.

>Or should I just buy games now?

yes

>He isn't on BTN

>Supporting the gaming Jew

So I'm guess why private trackers won't give me the same problem because in the public tracker, someone from a copyright company was lurking and copying down every IP address that seeded the torrent?

So on private trackers they check every user to make sure no one is a copyright company and I won't get sued? Do I need to use other stuff to protect myself or is this sufficient? GG looks nice, cute form.

afaik. nobody has ever gotten a copyright notice from a private tracker expect ipt

>So I'm guess why private trackers won't give me the same problem because in the public tracker, someone from a copyright company was lurking and copying down every IP address that seeded the torrent?
Pretty much. Copyright trolls go for low hanging fruit and are unlikely to be on private trackers. You could always get a seedbox for 10-15$/month. Assuming you DL at least one AAA game/month it'd pay for itself 4 times over

>So on private trackers they check every user to make sure no one is a copyright company and I won't get sued?
I don't think so, because I'm not sure how exactly they would figure this out.

On a private tracker in general you have a lesser chance of getting a copyright claim.

>Do I need to use other stuff to protect myself or is this sufficient?
just being on private trackers is usually fine. If you want to be super safe you could get a vpn tho.
I've never heard of anyone getting a copyright notice from a private tracker.

>I've never heard of anyone getting a copyright notice from a private tracker.
You must not know much then. Any tracker that isnt insanely hard to get into is just as easy for someone who will report you to get into. I would even go so far as its easier to nail people because of the smaller pool of people who share more.

No one is arguing that. Fact of the matter is, copyright agents only go for low hanging fruit i.e. large public trackers.

How the hell do i encode a film in x264 with handbrake? I want to start uploading to PTP but the guides there are either outdated or way to complicated (Advanced). I could do it myself but i wouldn't be sure that i would end with something acceptable for PTP. Help anons

>baaw i don't want to learn how to encode properly
well..

yet no one on private trackers gets copyright notices.

>he didn't see the screenshot of a ptp member posting in the forums about how he got a notice
keep on animuposting

Checked

MOTHERFUCKER

demonic truth

Anime GET is best GET

NIGGAS WE MADE IT

check em

Nah you got BTFO with demon trips. I would hide this thread out of embarrassment

what a boring get

PRIVATE TRACKER USERS ARE NOW IMMUNE FROM COPYRIGHT TROLLS. SATAN WILLS IT!

>got BTFO by a sequence of same numbers
haha are you for fucking real right now?

Satan personally took time out of his day to BTFO you.

Just filling out the GG form. And I was going to say I was referred to GG by /ptg/ but the wiki says:

"Staff have confirmed that browsing /ptg/ will result in your account being "marked"."

wut?

...

/marked/
>hehehe

BASED SATAN LETS US STEAL FROM THE JEWS

>I was going to say I was referred to GG by /ptg/ but the wiki says

....You will not last long on private trackers.

what waste
has PTG gone too far?

just say reddit

Copyright infringement cannot be easily equated to theft.

Wtf imma Satanist now!

public trackers on SUCIED WAHCT

Nice dubs bro xD

...

praised be the lord!

is being /marked/ even an issue?? do you personally know someone that had any trouble for being /marked/?

how should I know?
okay. what did Cred Forums do to get such a bad reputation?

>do you personally know someone that had any trouble for being /marked/?
yeah, that one retard that put /ptg/ as his title on AB and then got banned

Ask Tomoko, Bazey, and screenwatcher :^D

>how should I know?
By reading the wiki

invite trading and selling apparently

private trackers confirmed for ultimate patrician level

proof?

witnessed

...

that's completely different. they weren't /markedbecauseonPTG/ they got banned because they shared invites on Cred Forums, which is a public board.

go search on the archives faggot, i'm not wasting my time so you don't get marked

THIS SHIT IS OUT OF HAND, NIGGAS

321c banned Tomoko because he associated himself with PTG somehow

ANIME GET
CHOKE ON IT REDDITFAGS

welcome to the club

At the beginning of S5 of Game of Thrones, some episodes leaked ahead of their air date and made it on to BTN. Some of those users received copyright notices.

Someone from a porn production company was able to get the IP addresses of some Emp users and sent them a notice. This was at least three years ago, maybe more.

Last screener season, a film production company was able to link a leaked screener to the person who had uploaded it to PTP, and that person was arrested. PTP's name was also featured in articles about the arrest.

Private trackers aren't immune, but they're far less of a priority for movie studios than public trackers.
reddit.com/r/IAmA/comments/chonr/iaman_antipiracy_guy_at_a_major_movie_studio_ama/c0sn3dr

...

>septs

>reddit.com/r/IAmA/comments/chonr/iaman_antipiracy_guy_at_a_major_movie_studio_ama/c0sn3dr

Empornium invite forum, what invites tea available there?

Could someone post a printscreen of the invite forum?

>6 years ago

So imagine how much more sophisticated they are now

HAIL HYDRA

unlimited ptp invites post your email here

[email protected]

>watch out when you buy that seedbox
>seeding torrents is illegal
come on now

[email protected]

[email protected]

[email protected]

[email protected]

[email protected]

[email protected]

Terry was here

Hey Sam

[email protected]
thanks man looking forward to your invite :)

[email protected]

[email protected]

noice

DELETE THIS

>download all the what.cd freeleech picks
>within two hours three of them have been trumped/deleted

Does What.CD need torrent checkers?

Trumped why?

>wcds ecomomy is fine they said
>freeleech picks come along and everyone frantically drops everything to get them ASAP and gain every last possible drop of upload
Pathetic.

Did Drizzy Wap get executed by the Cabal?

I didn't actually check if any were trumped. There was one transcode, one bad tags, and one bad folder name.

and I've not even gained 1GB yet.

yep

Huh weird. I've already gotten 6GB on my connection of 11Mbps

Yes
Also:
>drizzy still isn't on BTN

Nothing out of the ordinary. Every user can report a torrent, and there is a standard set out in the rules, so "low quality" torrents can be deleted.

You need to make sure that your bittorrent client is "connectable". You do this by forwarding the port that it uses. Check the Network settings.

11mps upload?

uh, which were these?

>tfw I got into demonoid
>site shutdown.

>tfw got into bitgamer.su
>site shutdown.

haven't bothered with private trackers since then, but since kat shutdown I can't find a good site anymore.

filling out the gazelle app right now, having trouble with "4. What do you think you can contribute? This refers to the content experience of the site with regards to the forum community, IRC community, and torrents."

idk what to say to be honest. I'm quite a lowkey user. just download and seed, maybe a request every year or so.

Yes 11Mbos or ~1.4MB/s

Just bullshit and make stuff up. Try and be a little convincing though

whos that and what animu?

be creative
>I can seed 24/7
>I can test games in virtualbox for embedded viruses, bitcoin miners

etc, etc

but what should I bullshit, I really don't know.

Like maybe "help out noobs on IRC/forums" or some shit?

I can
>tie the stem of a cherry in a knot with my tongue

Content selection

BCG has a lot of releases that GGn doesn't, but BCG doesn't allow porn games.

Anyone who likes videogames should be on both.

Thoughts on torrentshack, freshon, and morethantv?

freshon >= mtv > tsh

>now i have almost a 4TB buffer
You fucking idiot...

Its fine to delete your uploads from your torrent client if they're being seeding by others correct? They will still count as your uploads yeah?

Thanks guys, does anyone know how long the application will remain open?

I clicked on the app link from Cred Forums because I'm a fucking moron and I want to wait a few days just in case.

Should it not be mtv >= freshon because mtv has way more torrents?

Simian Ghost - The Veil (2014) (FLAC) (WHATCD)
I am waiting for you last summer - In Eternal Lines (2013)
Willow.Smith-ARDIPITHECUS.2015

?

yeah, the only risk is if eventually everyone stops seeding and your torrent becomes dead, it will then likely be removed for inactivity

>Like maybe "help out noobs on IRC/forums" or some shit?
I put something like, "I can't really upload games or anything but I'm a perma seeder and will help with retention of underseeded content yadda yadda"

I don't think it matters if you click the link from here. How would they know that you saw the link here anyways?

freshon is probably better for packs only

http referrers.

I've been banned on reddit before because I clicked a link on Cred Forums to a sub and "brigaded" a post.

whatismyreferer.com/

And what if you don't use HTTP but use HTTPS instead

thanks... ublock?
I sure hope adblock gave me the same protection prior to the switch

did you click on a link? the fuck you thought it would say

I.. clicked on the link you literally just posted in this thread and it said nothing, even though it should have said that i was referred by Cred Forums. I also tried the same thing from google.

What? I suppose the referrer would be Cred Forums

Not an animu

Just a guy who draws lolis

this guy was not me

Cred Forums automatically removes the referrer by redirecting to sys.Cred Forums.org/derefer?url= when you click a link. And since https doesn't send referrer, even if you use Cred Forums in http, it will redirect you to the https Cred Forums first then redirect to the actual url.

Do you have any more rare Kyoukos m8?

She must do extra leg days to leap like that.

>mfw filled up 4/5ths of my seedbox already

should I just drop the freeleach shit after six months? Certainly nobody would ever download this garbage again

monobeno

Private tracker staff don't give a shit if you use Cred Forums

In my AnimeBytes application, I told them that I browse Cred Forums daily

Got accepted in two hours

How big is your seedbox? Also, FL usually drops to NL after awhile and there is no reason to continue seeding it

no point in keep seeding that shit after 3-4 days, nevermind permaseed lol

What tracker is the content from WCD?

is this ebil board

Get a 6 TB seedbox or larger

1TB, admittedly used a lot of it on a 250GB freeleach hentai collection from YE

>Hentai
Dude wtf xD

...

>hentai collection

nice work famalam. keep it up.

...

There is not much people with 4TB buffer at GG's. They're already identified you.

>no point in keep seeding that shit after 3-4 days, nevermind permaseed lol
I'm still getting like a GB/day from the freeleech posted a week ago.

what do you do with all your what.cuck 24bit/192Khz classical lads

thats because BCG have game packs

instead of 10000 individual SNES roms BCG has only 1 torrent that contains all the roms

this is why GGn has more torrents and it doesnt mean anything

BCG has a larger community and is ratio free with the awesome BP system

id take BCG over GGn anyday

ok kid

What would be the best tracker for documentary, mainly history and science, in your opinion?

...

>classic
into the trash

How to cheat on What.CD?

oi

You can't hear past 22 kHz and 16-bits of SNR is equivalent to whispering next to a running jet engine.

mRatio. You literally cannot get caught despite what retards like 312c say. They have no way of knowing if you are careful

Post your e-mail or What.CD user name and I'll send you my private guide on how to cheat

>You can't hear past 22 kHz
congratz on not knowing what sample rate is

Read both posts again, carefully.
Of course I know the Nyquist theorem.

[email protected]

Thanks man

Hey guys, What's the best tracker to join for Movies & TV Shows?

pic related. my internet speed

[email protected]

MTV morethan.tv

You need to be whatCD PU to get in though

OT.

>There is not much people with 4TB buffer at GG's.
Yes, there is.

Besides lots of GGNers are on /ptg/

Comfy tracker + comfy threads = comfy people

>cheating
>being careful
if your home upload is shit just get a $10 dollar seedbox for a few months and get /set4life/
if you can't afford paying that then you have much bigger life problems than worrying about ratio on pvt. trackers
>inb4 seedboxcuck
>still better than a ratio or a cheat cuck

HDB and BTN :^)

BTN and PTP

>Any good tracker for idol/japanese variety TV-shows?
omg, go away you spastic

Lets give suggestions in the realm of possibility for him. No need to taunt him.

>he thinks he will use his high upload speed on a private tracker

son, no one download anything on private trackers, you might as well have 9 mbps upload

>shilling this hard for your shit tracker

HDB, no question about it.
But then again so many people on HDB have a better set up than you, so nobody would give a shit about your silly little 1Gbps line.

>shilling

>implying PTP or BTN is not possible
your post is one of the little man

After years of slagging off IPT, whyshehateme exposes herself as an IPT user. WTF?

Hmm okay. Not possible NOW. He'd have to wait a while.

>shit tracker
literally anything that's not Bib,HDB or the holy trinity

>HDB is good
when will this meme die? PTP has way more content and BTN is ratioless.

I was just recommending him a place to download content that isn't public, until he gets into BTN

Hello Milliumillion!

Fuck, I disappeared from this thread right before someone posted about the new picks. I just finished grabbing them all. I hope I can still get some buffer.

>he judges tracker by content
kek..ptp has also SD content

same senpai,
hoping for the best

What's your upload speed

And most gems are only available in SD. What's your point pleb?

>he only looks at the sheer number of torrents
HDB is a meme only for those who can't get in ;)

Anything of any worth can be found on Karagarga anyway.

>he doesn't know about amazon-only hd versions with high bitrate
get a load of this non HDbits.org member :^)

And yet you can't explain why HDB is a great tracker. It truly is an epeen meme.

what is ye

>ded site where no one downloads

At least they don't allow pleb content

kek, how deluded do you have to be..

...

NEW THREAD

>not pleb content no one downloads and can't get you buffer

includm e in the screenshot

>using the smiley with a carat nose

...

Greetings from Brazil.

include me in the screenshot to /r/Cred Forums I'm /u/bottomlulz

FUCKING BTFO PUBLIC PLEBS

Repost it or bullshit

Based Nonon

Can somebody explain to me what a private tracker is?

I've got no idea past 'It's a torrent thingy'