Very interesting idea. So NSA's spying was exposed, everyone noticed, talked about it, and it seems like a good thing. But spying didn't stop. Operations didn't change. Neither NSA, White House, Google, or Facebook said they'll stop participating. No apologies.
So all that changed so far is that everyone starts behaving or acting keeping in mind that they are watched. Self censoring is very powerful. It would be interesting to see the rate in filter hits NSA gets on "terrorist-y" keywords before vs after the leaks. That would indicate the amount of self-censoring. We'll never see those statistics anytime soon, but someone is seeing it. Wonder what they are thinking or how they are interpreting this.