I found an interesting search engine called a swicki. Basically a swicki is a community-driven search engine tailored to your interests or the community’s interests.
For example, you could place the swicki on your website or blog and then tailor the engine to place certain search results on top of the queue. If you have a blog focused on, lets say, Philippine culture, you can tailor the search results to exclude all sorts of references to mail-order brides. A buzz cloud is also generated based on the what the community types into the search form.
More info can be found at their FAQ page.