My guess is there isn't much if anything the Russians didn't already know about the NSA. What I hear is that the NSA has thousands of employees as well as private contractors that work on the data collection and spying. Between a spy here and there and Chinese computer hacking my guess is that the only people that didn't know what was going on was Americans.<quoted text>
Surely he's shared his secrets with China & Russia. I don't see Putin bowing to Obama or Holder's request, even though they've promised to spare the death penalty. Greenwald made the statement to an Argentinean newspaper, "Snowden has enough information on the US government to cause more damage in one minute alone than any other person in US history". That's enough reason for the US to tread lightly, if true. I don't think Snowden's bluffing.
Besides Snowden hasn't said anything that I haven't already read here and there over the last years. If you haven't heard any of this then you just haven't kept up.
So far as I know he just told the American public things which they should have already known but didn't. It is possible that he did actually give some real secrets away to another country, but I don't know that.