To those of you familiar with the Linux and the FOSS community
Think of a weekend long Linux Users Group meeting with hundreds of other geeks, which also just happens to have nationally acclaimed guests, its own wireless network, hotel room parties, lots of folks talking about Science Fiction and Fantasy, a place to buy cool t-shirts and buttons and such, amateur singing, anime, a costume contest, and free caffeine and snacks always available.
To those of you familiar with Science Fiction conventions
Imagine all the convention features you know and love, with the addition of wireless internet access, computer gaming, people who know about online publishing / books on demand / digital art, a programming track involving computing topics and another one focusing on the crossover between Science Fiction and computing.
These two elements are synthesized together for a weekend of learning, socialization, and fostering ideas that spread like wildfire and spur inspiration. (That was really flowery, huh?)