[The Godfather]

The name isn't illegal and doesn't breach copyright. Names don't come within copyright.

Names come within trademark law. However, if a name doesn't have a registered trademark, and I don't think that BrainTalk does, then anyone can use it quite legally.

There were not 50,000 members on BrainTalk. User names were merely registered 50,000 times. Most of those no longer added to BT, or were just one off questions. Many of the others were the same people, those who fancied a name change, or those getting around unreasonable bans. If you look at the viewing figures for different threads on Brain Talk, and take account of the fact that many people will view some threads at least several times when they are added to, then I doubt if there were more than a few thousands active members on BrainTalk.

There also many people reading BT2 but not registering asoften happenson Forums.