Private Tracker Levels with Updated Rankings The tracker level is a measure of how hard to get into the tracker. The content ranking in brackets [ ] next to the tracker name is a measure of the amount of content (from 1 being worthless to 10 having pretty much everything) found at that tracker. So it looks like this: TrackerName[contentranking]
For example, Torrentleech -> Torrentleech is the tracker name,  is its content ranking.
The rarest of all private trackers:
These trackers only allow a maximum membership count of around 1,500 & 3,000 total users, respectively.
These sites are very difficult to get in to. Invites for existing members are likely shut down permanently. It may be easier to find someone who is giving away their account, as opposed to an invitation.
Level 5 sites are not given away for free. Everybody and anybody is trying to get into these sites from here up. It should be noted that these Level 5â€™s are commonly traded, and heavily requested. Memberships are usually limited to 20K or less.
The sites from this level and up are harder to get into. Having said that, most of these Level 3 sites are offered freely through tracker "giveaways".
These sites are easy to obtain. Chances are you will get in these sites easily by asking in the invite section of tracker invite websites. Many of these are often open publicly to new signups, as well.
These sites are open for signups. Those looking to join can register with ease.
and there are countless others!
FSC - member need to fill application and very hard to get approval even you are old BT user
E**** - elite FLAC tracker, almost impossible to found invite (except good ripper in PEdros)
Skittles & TTC - an elite tracker which some say "never exist" but they are
AOM - if you are not real magician, forget it. 0 chance at all. few VIP got invite
F*N - they give invite to donor & highest uploader (2months ago they hand out inivte to all donator, but now they stop it)
HDBits.org - almost impossible in rarity. only Staff & VIP can invite
iTS - member need to fill application
TranceTraffic - only VIP got invite every 2 month
TS-Tracker - even elite user sometimes not get invite. and invite system hardly open. (only 2days in 4-5 month)
BitHumen - need to bid for invite. usually 15star above is minimum to win bid on early month. (around 1.5TB upload/month)
P**** - only Uploader get 1invite each month. need to be good ripper (FLAC)
CN - they give 2invite for promotion before. now invite system disabled
Norbits - norwegian 0day tracker, rare to found its invite
PolishTracker - hard to find invite. even l33t user not get it. usually Uploader get it
SceneHD - 250p can buy 1invite. not hard if you upload (10p / upload)
MVids - VIP get 1invite every month. donate to become VIP - $10 for 30days
Ncore - Hungarian 2nd best after BitHumen. invite closed
****** - the most secure HD tracker. May r 2010 winne for BluRay release (HDBits no 2)
Level 3 & 4
Common site. No need explanation. Some can donate for invite, some will get when become Power user or Elite user
Level 2 & 1
Easy to get