Well, because of dynamic IPs, how easy it is to change your IP, and proxy servers, IP banning is flawed, anyways.

I would know, I couldn't tell you how many times I have went back on sites after multiple bannings and IP bannings. The GTA Place, I have been banned beyond count and now I'm a "Forum Security"((tiny mix between Admin and Global Mod)). AND they even know who I am. Did it at GTAWH, also, came back without even knowing what I had done((I had to reset my modem and somewhere that changed my IP)), and acted all normal. No one questioned me, either. And I'm a mod there now, too. It's like EVERY message board I get banned from, I come back, and become a mod. I'm just so cool like that.
Archived topic from Iceteks, old topic ID:3813, old post ID:30906