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Radio 1 presenter Gemma Cairney asks are we different online than in real life? Breakfast presenter Nick Grimshaw says he's cooler, funnier and more 'street' on twitter, while ultra-hip fashion blogger Bip Ling has made up her own language and a character called Mooch on instagram... Laura Dockrill performs a specially commissioned poem on the subject and explains why being called 'saffron' is the highest accolade around.

Dr Aleks Krotoski describes how we use language to create multiple personalities online across different social media platforms and the psychological effect of this. Forensic linguist Dr Claire Hardaker explains how communities rapidly develop their own unique lexicons as a way of establishing who's in and who's out.

Producer Milly Chowles.