Thanks for the answer!

The article was voted down. That makes me doubt I could write something like this and get it installed onto lots of normal websites.

I guess it would mostly be used for illegal porn anyway (say, pederasts here and close ups of ancles in Iran :-).

Sigh, one idea for version 2 would have been a gateway to one of those encrypted p-t-p networks. Then people reading Amnesty International and hrw.org in China would have been mixed up with people copying boring pop music.

I try to not go to dictatorships for vacation, so it wouldn't be that much of a loss if I couldn't go to China, Iran or Cuba (even though a dream vacation would be to eat myself through the restaurants of the Schezuan province... :-)