Saw this on a forum:

Want to browse lots of good results from two leading authorities, in a quick compact clean format ?

DoubleTrust is based on the simple premise that trusting two authorities is better than one. You want better search results, but don't want to use the top two search engines separately. DoubleTrust solves the problem for you.

www.doubletrust.net

Now,I'm wondering...is this entirely legal?using the Google and Yahoo names,first.
Second,if it is..why not just make a site that just 'requests' other search engines and displays the results?A small delay in showing the results perhaps,but..I dont know,it doesnt seem fair?