Bing Operators
One of the lesser known facts is the different operators that you can use when doing searches on Bing.
As an example you can do a noalter:microsft search to turn off the alteration service which alters {microsft} to {microsoft} by default.
Of course these are more useful when used programmatically, say via the Bing API.
By the way, very cool to see the number on the Windows Phone 7 Apps Bing visual search page at 2184 already! Way to go WP7!