Whats the likliness these are all the same person?
 

Answer: High, that is if they are even a person.

I noticed this while browsing today. I quick check of a couple of their profiles reveals similar/same information in each one.

Just an FYI, not sure if it helps anything.

Sure looks like it.

Yeah, we get a lot of membership attempts that don't go further than registering and establishing a screen name before getting zapped by our system. Mods and admins see the notifications but the spammers seldom get far enough to post. The thing is, the system needs to keep them in the member list to store the details of their attempts (IP address, etc.).