Watch the video...
The ported all the RoR magic to php, and left behind the horror that is to deploy RoR (more so in dreamhost!).
We don't want to fiddle with the servers (Virtual Private means you need to be your own sysadmin/web guy) so we are seriously considering this.
If they ported the RoR philosophy, they have a winner in their hands.
Now, this akelos thing is a tiny community (bad) but it is invented by an Spanish guy (!).
I think this deserves a serious look.