I dont think either is a particularly good idea, but in the absense of both deals falling through I'd say the best bet is the lesser of two evils.<p>Unfortunately, that would be a deal with Microsoft - thats not to say I dont like Google, I really do... but for them to control even more of the Internet advertising space will only end up driving up the prices for advertisers.<p>So the end consumer will more than likely lose more in a Yahoo/Google than in a Yahoo/Microsoft deal. Funny little paradox that - being cheaper with Microsoft.