Has your twitter feed been inundated with black bar-style censored tweets from your advertising friends?
If you haven't already figured it out, it's a new social media initiative promoting freedom of speech and whatnot. Head over to an Amnesty International microsite Tweet Censurado so you can see what your tweet would look like if it had black bars over it.
Interesting awareness concept, I guess. But censorship from governments doesn't look like this. Instead they just block internet access.
If you had partnered with Twitter to 'shut down' for a day to approximate what it really feels like,
I think you would have made a stronger point and I would have been more impressed.