There's info on the net that the two sister-sites have been shut down.
We will know more in the next days.

That's really too bad. I remember that the Sysop in Biztorrents dispatched a mass PM the past week, asking for donations, to pay the server costs. I really hope it can come back, if that was really the issue.

There were just a few torrents lately, but the community was friendly and helpful, despite being small.

http://biztorrents.com is currently up now, again