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David Cameron once famously declared that "too many twits might make a twat" but nevertheless eventually caved and joined Twitter.
Here are eight other times when the prime minister demonstrated a lack of understanding about just how The Internet works.
Encrypted messaging services such as Snapchat and Whatsapp could be under threat if a Tory government is elected this year. As part of Cameron's plans for new surveillance powers, he said that he would ban services that do not allow security services to read messages even with a warrant.