Katie you are probably already a member. There are just 3 requirements:
1) Yes is to be spelled YES. Lazy and hip variations such as yeah, yup, yer are forbidden. Yeah ought to carry a death sentence because it takes longer to type and is therefore doubly posy, like a man with a neatly trimmed moustache.
2) Use 'methinks' even once and you are out on your ear.
3) No really really irritating let-down posts like
You expected something uproariously funny or witty here, but as ever you were disappointed.