Just be excellent to each other (principle #1 out of 1). Bring a drink, a project and a friend and we're all set.
For those that may be new and interested: There's usually a few technology-minded people that drop by on random Thursday evenings with "goesting" to make. Some people bring a project and others bring their skills to collaborate on others' projects. (and there's a lot of nerd talk)
If you're into a geeky bar mode, feel free to drop by. It is NOT required for your skills be on a high level, you are NOT required to contribute knowledge; instead, it is encouraged that everyone LEARNS stuff at our gatherings.