Do you think you are good at the internet? this week we talk to Rachel Coldicutt, CEO of the internet think tank Doteveryone about how much Britain really knows about the internet. We cover the perils of public wifi, the possible need for a good technology trademark, why tech giants might find their business models under pressure in the next few years and whether it's right to assume people are ignorant or gullible when it comes to information online.

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