All you need is at least 4 members, a name and some sort of goal/code/agenda and a motto to sign your posts with. I am currently tossing around a few ideas for mine (something to do with functional programming) but feel free to discuss.
Members: everyone on /prog/ with the exception of THAT guy.
Agenda: spread autism through the usage of LISP, SICP and shitty memes
Motto: noko every day
Motivation: because I'm guildy enough
Arch-Nemesis: THAT guy who tries to save prog.
Languages used: r5rs, lua, c++, python, English (lol, last so rund0m xD).