Grappling is fantastic! Unfortunately it doesn't play out well in pbp. It's very roll intensive with AoO's, then touch attack, then grapple check, then opposed grapple check, then unarmed attack damage, and once all that's done you do it again on your opponents turn then yours then his then yours then his, so on and so forth. Just makes alot of rolling. It can be done, but it slows things down sometimes.