People get busy, have work, have other obligations? I don't see the site as dead. In the past 3 weeks I've been in three different RPs and seen over 200+ posts between them. That's pretty impressive in my book. 

As far as other sites, I'm afraid I can't help too much. This is the one place I actually know. There's some site called Iwaku people go to as well. Sorry you're not enjoying the activity you're used to?