Bing will take over google is just hype created by microsoft. Search results are poor and in no way comparable with google. I don't know what algorithm they use. But most of the searched for which only google responds, bing fails to give results. Now i don't want to mention those keywords in this forum. But if you're using search engine to check performance of your site, you'll come to know what i mean. Bing has no importance for search queries which involves market criticism, analysis etc. Try getting results for anti-microsoft sites, you'll see the difference. Bing also has no place for warez world,very limited results

. But good thing is atleast they're not listing keyword hijacking sites.
Bing is such useless search engine, it's not even worth for file search. Forget about it's comparison with google.Bing can't beat search engines like yauba and cuil when it comes to file search. Finding pdf,ppt from the bing search is such that finding something in register which is not registered. Very poor search engine just MSN live is branded as Bing and nothing else. If i've to move from google then i'll look for file searching sites instead of bing. Atleast i'll get what i'm looking for.