Bing isn't different enough to gain mindshare, and it's search results can't compete with Google (or even Blekko's IMO).

You know what would be disruptive? A search engine for physical spaces. When I'm scouring my apartment for a matching sock or my keys, I'd do a search and the missing item would be located.

I don't know how, but someone should do this.

EDIT: No, I'm not high. Just weird.