My computer is blocked by a website

When I try to hit a forum website i says you been blocked. Even though I always used proxy server, because I knew they would try to block my ip. How can they block it when I was using proxy server?

HMMM. I know i was going to get blocked, and always using a proxy. Sounds like you where doing something against a forums rules and failed to distinguish the difference between a circumventor and an anonymous proxy. Or you accidently visited the site at least once without a proxied connection like maybe clicked a link in an email?? Or used a tracking cookie

However, you probably deserved the ban and im am quite glad they got your ip instead of you being able to re-register. I hate spammers and i hope you do not find a way around this.