loosely structured, there are rules at BarCamp. All attendees are encouraged to present or facilitate a session or otherwise contribute to the event. Everyone is also asked to share information and experiences of the event via public web channels, including blogs, photo sharing, social bookmarking, Twitter, wikis, and IRC. This encouragement to share is a deliberate change from the "off-the-record by default" and "no recordings" rules at many invite-only participant driven conferences. It also turns a physical, face-to-face event into a 'hybrid event' which enables remote online engagement with BarCamp participants. Hosting and attending Venues typically provide basic services. Free network access, usually WiFi, is crucial. Following the model of Foo Camp, the venue also makes space for the attendees, or BarCampers, to literally camp out overnight. Thus, BarCamps rely on securing sponsorship, ranging from the venue and network access to beverages and food. Attendance is typically free of charge and generally restricted only by space constraints. Participants are typically encouraged to sign up in advance. Historical precedents Historically, Bar Camp was based on the structure of Foo Camp, but with the requirement that participation should be open to all. (Foo Camp, an early unconference, was organized by Tim O'Reilly and Sara Winge; Winge had been a student of Harrison Owen. This form of self-organized user generated conferences is also related to hackers' meetings in Europe, especially those nearer to anarchism and autonomism, happening since the '90s in Temporary Autonomous Zones or other occupied places. However, BarCamps lack the political motivations and are actually quite integrated with the mainstream ICT industry, often getting substantial sponsorships from major corporations. See also Café Philosophique Hackathon Knowledge cafe StixCamp SuperHappyDevHouse Sweden Social Web Camp TeachMeet Tribe (internet) DataMeet References External links BarCamp.org (website) (archived 2 November 2010) Singel, Ryan. Barring None, Geek Camp Rocks (archived 3 December 2005). Wired News. August 23, 2005. Retrieved June 30, 2006. Craig, Kathleen. Why "unconferences" are fun conferences. Business 2.0 Magazine. June 6, 2006. Retrieved June 30, 2006. Murali, J. New conferencing tool: An attempt to conduct on-line meetings in a participatory environment (archived 22 April 2006). The Hindu. April 17, 2006. Retrieved June 30, 2006. Jagadeesh, Namith. With focus on human interaction, "unconferences" come of age. "LiveMint". May 26, 2008. Retrieved May 26, 2008. Tarun Chandel. Bridging the gap between students and industry. "LiveMint". March 8, 2008. Retrieved Mar 8, 2008. Çelik, Tantek. Remembering the idea