> How long do you think it would continue to be illegal to mention Naziism in Germany if Twitter, Facebook, Google, et al, decided to boycott the entire country?

I don't know about that, but Twitter has already raised questions over the practicality of English "super-injunctions": http://en.wikipedia.org/wiki/2011_British_privacy_injunction...

I guess it's less palatable to censor tweets about Ryan Giggs than tweets praising the Nazis, though.