You need to start your own bulletin board or your own listserv. You obviously have the know-how. Set it up like the Eagle.net board with user names and passwords. That will help out alot. They don't have to be real names or real email addresses to confirm the user name and password, so there can still be anonymous posting.

Or do what USM Sympthasizer said. Start all over with a new name that is not branded. You will need to change your IP though, or having a new name won't help at all.

You really should start your own board though.