After viewing a message on Google Blogoscoped, it pointed me to a website called DoubleTrust.

Its concept works on a great idea that if a website is ranking highly on both Google and Yahoo there is more trust - therefore the site is more likely to be relevant.

This reminds me of the site Yahoo vs. Google which can compare the results of the two most popular search engines in a easy to follow dot-presentation of the first 40 results. Websites with a short line nearest the left side can be considered more trustworthy results.