ready,fire,aim
So do you think that the right type of buyer even exists?

i think the right buyer has a lot of cash (at least several hundred million) they are willing to spend on taking control of the assets and R&D, and really wants to make sure there is a competitive alternative in the market to Google.  Would make microsoft the natural buyer, but not sure they really want into this game or have the confidence they can build the ad platform of the future.