Unless you live in the U.S. and is a Verizon customer, Bing is not yet available to everyone. Not that I need Bing on my Nexus One, but I will never understand such moves from Microsoft, Google and the other major players. Why not just make apps available to the world? Why is that the different app stores do not have a uniform view and offering? Why does it have to be location based?
That said, Microsoft Bing app "features the Bing image of the day, complete with clickable hotspots". Also included is the ability to do voice search, image search and more. No words yet from Microsoft as to when Bing will reach out to the rest of us non-Verizon customers.
Read more here.