Scour

Scour.com is a next gen search engine with Google/Yahoo/Bing results and user comments all on one page.
Scour's purpose is to bridge the gap between searchers and relevant results.
By providing a platform for the user to vote and comment on relevancy, searchers connect with one another creating a true social search community, attained through innovative solutions to meet the needs of today's web searchers.

http://www.scour.com