Most users with high bandwidth connections are nowadays on the lookout for High Definition (HD) content. Here are 3 private trackers specializing in HD content which are currently open for signup.
High Definition Torrents (HDTorrents) is a decent private tracker with nearly 6000 users and tracks over 750 torrents. It Tracks original Blu Ray and HD-DVD movies as well as ripped, x264 movies, anime, docs and adult content.
Site Name: High Definition Torrents
Signup URL: http://hd-torrents.org/account.php
HDCity is a Spanish tracker which specializes in HD content. The interface language is Spanish but you should be able to find your way around as it has a similar structure to other torrent sites. Although the tracker has Spanish origin, it does track English content as well.
HDCity has a user base of 5700 and tracks 2134 torrents at time of this post. You need to read the rules before you can see any torrent on this tracker.
Site Name: HDCity
Signup URL: http://hdcity.es/account.php
HD Transmission is a fairly new HD tracker which has seen some good progress in the recent weeks. It tracks HD movies as well as FLAC lossless audio. Currently there are 3196 users on this tracker and 377 torrents on the index.
Site Name: HD Transmission
Signup URL: http://www.hdtransmission.com/signup.php