- Mem,
most people's IP addresses renew periodically anyway, but it's very easy to get another one or go through a proxy to get by the IP ban.
It's not that easy. I tried it at another site. It is a pain in the ass to go thru a proxy site each time you log on when you are blocked. Then if you do re-register you have to link from your e-mail to get back from some sites to reconfirm your account and it does not always work.