[mark350]

Well, a good start would be character recognition... in other words, if a user name is "John," then the following would not be allowed:

John + any set of numbers.... therefore, Johnny would be allowed, however, John1, 3John, John5 would all not be allowed.

Then the system could also look at "John" and require two or more letters difference for the next user name... so "Johnny would be ok, but "Johhn" would not... then you could associated 0 and O etc

I agree, it can get complicated... I think AOL has some feature like this when selecting user names - I was just curious if Vbulletin already had something out there like that? If not, I may have to get something like that developed custom.