I don't normally GM, but I have some clear ideas about the RPs I join :P

For most RPs, especially new ones, I expect people to post at a frequent rate. At least once per day, or faster.

A RP's most important assets are its constituent players, and for a group of strangers to get together, learn to know each other and form an effective relation with one-another is going to require medium to high intensity interaction between the players, both in the IC and OOC space.

I don't like to be pushy, but I feel that if we're ever gonna make a fun and coherent RP, it's going to require a degree of personal commitment from the participating players.
it's just like any party or event IRL. If people aren't in it, showing up late, constantly distracted or otherwise not interested, then they quite frankly just end up damaging the event :(

And yes, some might classify me as the "psycho-poster" ^_^