Private torrent trackers opening signups on a monthly basis is nothing new – several invite only torrent communities such as GFXnews, AudioNews, AppzUniverse, Pro Audio Torrents, ElbitZ, etc already engage in this practice with successful results. Latest tracker to join this club is PianoSheets, a unique, Gazelle powered, torrent site which specializes in piano sheet music, tutorials, electronic books plus other educational material that will definitely come in handy for professionals,...

Out of the thousands of private torrent trackers that exist today, not many can boast about being online for 6+ years. PolishTracker is one site that can. PT turns 6 today and in celebration, they are giving away free invites on the official IRC channel. Getting into this site is considered quite hard – it hasn't had an open registration in the recent history and there are no alternate recruitment campaigns going on in other sites including invite forums or blogs. For those of you who haven't...