I don't see how you can get around this issue, happens everywhere. You only need to change 1 letter or number for the whole word to be different as far as a database goes, that's my understanding, please correct me if I'm wrong.

I've seen it on other sites where new members take a very similar name to a terrific artist so as to try and get more hits from people mistaking the name!

Injustice will be avenged.
Cofiwch Dryweryn.