* The NSA has backdoored core routers of the Internet, to gather traffic and metadata. The metadata is not superficial, but since the Internet is no longer decentralized, the useful surface for spying has moved into the applicaiton domains. This is what I mean by "The Internet". * And FISA warrants do allow large-scale spying. * Not only is Facebook explicitly a mass surveillance (and mass influence) device, but there are multiple vectors into it for law enforcement.