As we all know, different search engines produce different search results based on several parameters some of which are never confirmed.

If you have been ccomparing search engine results in the major search engines(google, yahoo and MSN), then I am sure you will use this site very well.

The site is Twingine and its done well. The site combines the results of Google and Yahoo and displays in two frames. Actually, I had the same idea 2 years back but I had no time or resource at that time and now its too late to talk about it. I hope you will like the site.