Microsoft's Bing today launched their visual search tool for WP& apps, allowing you to peruse the selection via any web browser. This kind of a cool thing if you're not at your home PC and want to look up some info about apps for Windows Phone 7or want to send a link to someone. about a particular program.
What we're hoping for next here at WPCentral: Send to phone. Android has this through the AppBrain system and hopefully Microsoft has taken note.