Maybe Facebook’s position on two-way data reciprocity is based on its now-publicized need to monetize Facebook.  Lets see, 1 billion users at $2 each per month.  Thats $24 billion a year.  You’d pay $2 a month for Facebook, wouldn’t you?

Google CEO Larry Page: Facebook Is Holding Users ‘Hostage’ And It Doesn’t Make Sense – Business Insider