The logical end result of the government's collecting people's calls and texts and web visits and nekkid photos is that the government will later use that data. So I would assume that one of the aces up Snowden's sleeve is documents with the specifics about how all this data was (is) used to blackmail people, including politicians -- although that would probably be something that the CIA actually carries out, whereas the NSA merely grabbed the data that makes it possible.
