You are seeing this page because the webmaster has banned your User Agent (CCBot/2.0 (http://commoncrawl.org/faq/)) from this site. The most likely explanation is that you appeared to be a bot that the webmaster doesn't want around. You may contact webmaster at this_domain if this is not the case. The FUCK OFF link is there to make bots follow a link to their own IP address, so if you're a human being, you probably shouldn't follow it.