Where do you find players? If you have any players you rp with regularly in other games, see if you can get them to join yours. Get some posts and threads going between you so that when you advertise on ad journals (I have a few on my profile that I couldn't see on yours) anyone who clicks through to your game will see n active one and may be tempted to join themselves.
Tips on moderating? Don't try to run the whole game by yourself. Find at least one co-mod, maybe two, to help out. Especially if you aren't a strong coder.