I am finding that I get more relevant responses from a Bing query then I do from the same google query. Naturally, I have been testing the same queries on both.
That being said, a recent newsweek article is touting twitter as the search engine of the future. The gist of the article is that people's 140 character tweets contain links to in depth articles. With the appropriate app you can search the tweets and come up with more relevant articles on the question that interests you as well as "live" real-time in depth discussions. For example, an educators conference ended up with many tweets during the conference. If you were interested in the topic you could search twitter and come up with an actual conference in progress and get real information that you could not get on google or any other search engine. Google and other search engine do not provide real-time live information. Twitter is capable of doing just that.
