Russia's top social networking site...defiantly rejected a request by the Federal Security Service to block opposition groups from using it to organize street protests accusing the authorities of rigging this week's election..."We received a request from the FSB asking us to close activities by groups calling to make noise on the street, to organize a revolution," VKontakte spokesman Vladislav Tsyplukhin said...Many bloggers now fear the authorities will crack down. In recent days, mass cyber attacks crippled the country's top blogging platform LiveJournal and the sites of liberal media outfits which reported on campaign violations....[also refers to Gmail (part of Google), Hotmail (part of Microsoft), Skype (part of Microsoft), Facebook]