Great to see these numbers from Facebook - hopefully now Google can do the same, and report numbers that should have been public in the first place (and that they probably would have liked to make public). I can't see any justification for saying that they're lying, and frankly think it is verging on conspiracy theory to say they are, why would they bother releasing anything at all? Though broader in scope than many (including myself) would like, this tallies with their initial statements, and with a system as described in the PRISM documents (which are pretty vague anyway). Of course this isn't the entirety of the information the NSA is collecting, and probably not the entirety of data from FaceBook if they are also harvesting traffic, but it could very well be everything FaceBook knows about.

The thing that worries me most about all this collection is that the NSA probably never deletes any of its data (as evidenced by their massive storage facilities being built), so eventually they can build up quite a large store of complete data on people if they just keep collecting from various sources gradually over time.