Ever wanted Google to return poppendieck.com, when you search for Mary?
I was a bit tired of seeing a lot of rugby results, when I search for Scrum related sites and created the Agile Web Search engine. It is built on top of the Google Co-op technology and searches the whole web, while boosting the agility-related sites a bit. It helps me search faster, it might be useful for you as well.
Give Agile Web Search a try. Details and proposals on how the search results are/should be boosted up can be found on the forum.