Twitter, the internet social network, is developing technology it hopes will prevent the Chinese and Iranian governments being able to censor its users... "...The most productive way to fight [being blocked] is not by trying to engage China and other governments whose very being is against what we are about. I am hopeful there are technological ways around these barriers," [Evan Williams, CEO & co-founder of Twitter] said...Mr Williams was among executives of social networks, including MySpace [part of News Corporation], Facebook and LinkedIn, who were challenged during a debate in Davos to make a statement against censorship. He gave the clearest account of how his company intended to resist surveillance.