Figure out the requests coming from microsoft and return a different set of search results (e.g. XXX stuff) so that it doesn't show up for organic google resutls. Set the trap and once bing has incorporated those results for a keyterm, spam TC and LOL at Steve Ballmer gettingn worked up.
This discredits the relevancy of bing and all that PR dollars spent rebranding would have gone down the drain. Imagine searching for a harmless search term like 'poodle' and getting hardcore triple xxx results.
Oh well, dont do evil right?