BitTorrent trackers and associated websites are dime-a-dozen. Public trackers are used by most torrent users. The disadvantage of public trackers is that files may be unseeded once the initial frenzy is over, or some may have poor seed-to-peer ratio.
Private torrent trackers solve this problem by making access highly exclusive. Members are allowed in a restricted fashion, usually with invites and time-limited registration windows. Keeping track of trackers with open registration can be a real head ache without the proper tool
Tracker Checker is a website that lists private torrent trackers, and their registration status (open, closed or offline). You can also click through to the tracker sign up page from Tracker Checker.
Quite a handy tool for the hard core BitTorrent users.
Visit Tracker Checker