Iran's bloggers thrive despite blocks

Iran has one of the most vibrant blogging communities in the world - despite government boasts that it blocks five million websites. The BBC's Jon Leyne in Tehran is spending the day with bloggers to see what makes them tick. With much of the official media controlled by the government or hardline conservatives, the internet has become the favoured way of communicating for Iran's well-educated and inquisitive younger generation.

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