Every dollar of advertising that Facebook makes is a dollar or even more from Google. Every minute that facebookers facebook, google isn't showing them ads and isn't getting click throughs and this amounts to a vastly larger sum of money than any new search engine or aggregator or individual media company which google has already rendered moot to a large extent.
This is real time search which everyone has been asking for with all the data stored on google's super voluminous uber-fast lightning machine with its neurons and axons keeping the world connected and communicating.
Here it is and we don't want it.
The competition is for virtual real estate. Everywhere there is blank space on the screen or blank time in the consumer day or a blank wall in the virtual world, there will be an ad on it, just as today there are ads in nearly every physical space: Public transportation, Bar room mirrors, big screen tvs... Nothing is safe. No one is safe from Google and they have crossed the nash equilibrium where everyone is competing against them, including the websites where they get their content and the websites where people go to pass time.