The reports on this guy are pretty interesting, pretty much all I've seen coming out of mainstream sources condemn his actions, everywhere else praises him as a hero. Seeing as American media has become the de facto 4th branch of government, I'd say it's pretty safe to say he's not a traitor.
Also, compare his actions to what Bradley Manning did;
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MSM logic says if he did what Manning did it would support his cause... Except most outlets pretty much shit all over Manning in the same way they're doing to Snowden to smear their public image. This shit is textbook.