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BarCamp is an ad-hoc open gathering where participants share, learn, discuss and have fun. It has no pre-scheduled presentations, spectators, or fees - anyone can join and choose which sessions to attend. More than 500 BarCamps have been organized on 5 continents in over 350 cities worldwide. For businesses, BarCamps can help with branding, educating users and professionals, communicating, talent scouting, innovating, and creating a friendly image. The document provides examples of past BarCamps and encourages attendees to share what they learn with others.