BarCamp is a Free Event.

BarCamps are organized and evangelized largely through the web, harnessing what might be called a Web 2.0 communications toolkit. Anyone can initiate a BarCamp, using the BarCamp wiki. BarCamp wiki.

The procedural framework consists of sessions proposed and scheduled each day by attendees, mostly on-site, typically using white boards or paper taped to the wall.

While loosely structured, there are rules at BarCamp. All attendees are encouraged to present or facilitate a session. Everyone is also asked to share information and experiences of the event, both live and after the fact, via public web channels including (but not limited to) blogging, photo sharing, social bookmarking, wiki-ing, and IRC. This open encouragement to share everything about the event is in deliberate contrast to the “off the record by default” and “no recordings” rules at many private invite-only participant driven conferences.

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, a.k.a. 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 monetarily free and generally restricted only by space constraints. Participants are asked, though, to sign up in advance.