Bitshock certainly are expanding. They've up to now launched a general tracker, games tracker (which has been offline recently) and now a dedicated appz tracker. Appz Bitshock is a private torrent tracker specializing in applications for various Operating systems such as Windows and Mac.
There are just under 3000 registered users on this tracker and around 1900 torrents. Apart from software, related ebooks, wallpapers and web templates are also tracked by Appz Bitshock. One issue i had with the tracker is that most torrents are left with only 1 seeder. This will hopefully be resolved as more and more users join the tracker. Apart from that Appz Bitshock seem to be a nice appz tracmer so don't forget to check it out - signups are open.
Site Name: Appz Bitshock
Signup URL: http://appz.bitshock.org/signup.php