Will tech firms challenge China's 'open' internet?

Sometimes you can gauge how proud someone is about being at an event by the extent to which they want to talk about it. When that event is China's annual global internet get-together in Wuzhen there are plenty who turn up, but fewer who want to advertise their attendance. China has been smart and ruthless in its control of the internet within its borders. It blocks some foreign sites altogether and it censors - heavily - what Chinese are allowed to see.

Nonetheless the big idea at this gathering is openness. There wasn't much openness about the "great firewall" that keeps out Twitter, Facebook, Google and the New York Times to name a few.

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