Facebook Developer Garage History
Immediately following the Platform launch at the f8, Facebook Developers Conference, on May 24, 2007, informal, community driven, developer events began emerging around the world. In an effort to support the ecosystem, the events, and the developers involved in them, the concept of the Facebook Developer Garage was conceived.
Philosophy
Facebook Developer Garages are just like they sound – a place to explore, get gritty, tinker, experiment, and test out ideas for Facebook Platform. Being in the Garage is all about participating, getting your hands dirty, and exploring fresh ideas and solutions. Garages should encourage community involvement and incorporate presentations by participants.
Source: Facebook Developers Wiki