It's now illegal to access a site you've been banned from in the US. More info can be found here. http://arstechnica.com/tech-policy/...ess-public-website-ruled-violation-of-us-law/
I'd like to see them try to enforce this. It'll be a disaster.
Hell, it's easy enough to evade an IP ban unintentionally by doing absolutely nothing on your end. Claiming that an IP ban is an effective method of preventing a specific person from visiting a web site is laughable at best.