This goes for all social networks (including Slashdot) but I will use Facebook as an example:
You do not have a FaceBook page.
No you don't.
Facebook has a page on you, which you update for them for free. You are a product that Facebook produces for its customers. The customers of Facebook are the advertisers, not you. This is not necessarily a bad deal for you. You get to show people Facebook's page about you, and derive pleasure from interacting with Facebook's pages about your friends. All for free.
But don't get upset when Facebook decides to improve things for its customers, because they can (and should) put them first. Facebook owes you nothing.
Regulating social networks seems like an exercise in frustration. What counts as a social network? Does my blog count? Do I need to let users download all their comments in an "industry standard format"? Do MMO's count? Can I download my +5 firesword?