It's free and open for anyone to sign-up to on a first-come-first-served basis. It's on a weekday in the evening, so you don't need to take time off work or away from your weekend family/code-hacking time to attend. We'll even feed and beer you.
The evening is structured around a sequence of informal lightning talks (5 minutes maximum). Anyone can give a talk (though please at least pretend to be roughly on topic). Some people come prepared with slides and demos and stuff. Others make it up as they go. If you've got something you think will be of interest, it's a good place to talk about it.
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