@Alphaeus it comes across as such a great idea, and it really really is, but people need a lot of motivation to stay involved. You'll tend to find that players get bored / uninterested while waiting for someone else to post. By the time there turn has rolled around, whatever inspiration they had is gone. It goes from "Oh man I'm totally going to X and then Y and BAM!" to "Oh, I guess it's my turn. I hit them with a hammer"
At least, thats my experience