From The Guardian: Russia threatens to ban Google, Twitter and Facebook over extremist content : Russia’s communications watchdog has threatened to fine Facebook, Google and Twitter and block their services under a controversial law on blogging. In a letter to executives on on Monday, the director of the communications oversight agency warned that the three US companies could face sanctions if they continued alleged illegal activities in Russia, Izvestia newspaper reported on Wednesday. Any action could affect a number of social media sites: besides its eponymous social network, Facebook also owns the photo-sharing service Instagram, while Google owns YouTube, BlogSpot and Google+. Facebook and Twitter, in particular, have been instrumental to organisers of opposition protests in Russia, where the major television news channels are controlled by the state. A spokesman told the state news agency RIA Novosti that the watchdog’s complaints related mainly to deleting pages with ext...