http://websearch.alexa.com
I can see a day when search engines are as common as registrars. When google is "just another search engine". I'm working with this beta and I think being "owned" by 1 search engine will become a thing of the past.
What are your thoughts. They are opening up their API to the public. This may be more of a developers thread but if you check out the site you can still see the possibilities. If you haven't heard of Alexa you probably will be in the near future...