A Guide to What We Now Know About the NSA's Dragnet Searches of Your Communications

[ProSense]

6. This is a good collection of Greenwald's reporting,

and a lot of it has been addressed and debunked. It reads like a Greenwald press release.

For example, Greenwald on Xkeyscore:

Under US law, the NSA is required to obtain an individualized Fisa warrant only if the target of their surveillance is a 'US person', though no such warrant is required for intercepting the communications of Americans with foreign targets. But XKeyscore provides the technological capability, if not the legal authority, to target even US persons for extensive electronic surveillance without a warrant provided that some identifying information, such as their email or IP address, is known to the analyst.

http://www.theguardian.com/world/2013/jul/31/nsa-top-secret-program-online-data

Again, Greenwald is talking about "technological capability." He's speculating and has no evidence that any laws are being ignored. The program targets are foreign.

Greenwald is now recycling his breaking revelations.
http://www.democraticunderground.com/10023378966