[oreganoz]

Hmm, I guess I better look deeper into Clojure. Finally I get to play with a Lisp.

My main interest with actors is that these can be made to support hot code reloading on the server side. They also tend to be easily composable. Also also, they can be optimized by locality (eg. same-node, same-cluster, different-cluster)

I'm biased though, having not worked with CSP or other models.

[hellofunk]

I think you will find that as far as composability and hot code reloading, the combination of proper functional programming with a true REPL make this a powerful combination in Clojure that will at least match what you would get in a language built around actors.