I've installed a new Bit Torrent tracker on SEnet, to alleviate the need to run it from home.
More excitingly, it will allow users to upload their own torrents!
It is located at:
http://bt.spaceempires.net/
You will need to redownload all torrents you may be seeding. You can just point them to the same saved files and avoid redownloading data, naturally.
Note that I have not installed a mail server on the server as of yet. If you wish to register an account, you will need to await me confirming it. Torrents can be downloaded without registration.