The search space is again heating up, as social search takes center stage due to the MySpace and Facebook incursions on Google’s stranglehold. I had a very interesting talk today with Chamath Palihapitiya, VP of Product Marketing & Operations at Facebook, more on that soon. But it came to mind as I reviewed this interview on Om Malik’s show (thanks for the tip, Ben). Marissa talks about a lot of things, but I can’t help wondering how much of her time is worrying about social search, about which Venturebeat reports she’s less than enthusiastic.