Announced today on their homepage:
I have 20 invites if anyone needs one, just PM me.We have decided to close SuperTorrents to the public for the time being. As of next saturday (6/24/05), SuperTorrents will no longer be giving out invites and all active invites will be deleted. After that point the only way to get invites will be by donating. We suggest you use this time to get rid of your invites and get any friends you forgot onto the site before it closes. Good luck!