The Middleware Connection: Scala, Akka and Heroku

I fail to see the connection. Akka appears to be a library for message-passing, which is great. Not at all like Rails, Django or Java's middleware, all of which the article tries to draw parallels with.

As far as I can tell, Akka has basically no relation to cloud computing, except that you could use a cloud server to run a Scala app doing some message-passing. But "cloud" is the new "cowbell" and the ReadWriteWeb editors are Christopher Walken.