aloud to register again?

I don't know about registering again but you can ask a Mod to change your sceen name.

Do you email them a private email or something?

I guess you could try PMing Voodoo or Ly.

The answer is no to making another screen name. We would rather you only have one. Teresa can change your screen name if you ask her very nicely. You should have posted this in the feedback forum, not in cavy chat.