Chris Sherman wrote an interesting article on how Yahoo & MSN Closing the Google Gap based on a study was conducted by Keynote. "A new study says that Yahoo and MSN Search have made significant improvements in user satisfaction, narrowing the gap Google has traditionally enjoyed. The study also says that this could be troublesome for Google, as more than 50% of all searchers are more than willing to try an alternative engine if they don't get satisfactory results from their primary engine."
Chris started a thread on this topic, where we can all comment. Ask Jeeves closing in as well? "Ask Jeeves also received improved ratings, though not to the same degree as Yahoo and MSN."