[NeoCaveman]

Who's to say that this person has been banned before? He could be a FReeper in good standing, having been here for quite a while, and is now laughing. How hard is it to simply create another username?

Not hard to do, but also not hard to catch, providing they are using the same IP address.

[rdb3]

Not hard to do, but also not hard to catch, providing they are using the same IP address.

Proxy, proxy, proxy. A proxy server can conceal a real IP, thus, your identity. There are anonymous proxy servers listed at Google among other search engines. Hotmail and other free e-mail services can be used for registration.