In case this hasn't been blogged to death I want to introduce you to a new feature of Google.com's search engine that will help clean up your search results. There is one site in particular that this feature practically seems to be built for and if you're an IT pro either you pay this site (and succumb to this extortion) or you will love this feature and use it.
If you want to block all results for a given domain, just click the link for the evil result (maybe this is Google's way of showing them SOME mercy), then navigate back and hover over that same result. A new option will show up allowing you to block the site. Below is a highlighted example of the link after following the result and navigating back.