Blekko / A new kind of Search Engine

You can conduct sophisticated searches in the search engine text box and you can use a system of slashes to refine your searches on the fly.

You really need to watch the video to see what this search engine can do.
Check out the spam button too.

http://www.zdnet.com/blog/google/blekko-cool-for-the-geekorati-but-no-google-killer/2592?tag=nl.e589