Twestival, a real-life gathering of thousands of users of the social messaging service, hopes to raise more than $1m for charity London Twestival organiser

Amanda Rose. Photograph: Michael Halls-Moore Since the first Twestival in London in September last year, the charity event has mushroomed into an international phenomenon, with 175 cities hosting parties for Twitter users who will donate upwards of $5 to . Events producer and entrepreneur set up Twestival with PR friends Ben Matthews, Tom Malcolm and Tim Hoang