This is awesome, but I just want to point out one thing: twitter.util and Finagle are traps. Twitter's libraries are awesome, but won't build on scala 1.9 (or even 1.8.2), yet, and it's not clear if they will anytime soon. This rules out Akka >1.0, and 1.0 is pretty old and sometimes just broken. I just spent a couple weeks rewriting a ton of code to get myself out of this hole after starting with the awesome scala-bootstrap, and I can tell you it's no fun. So, if you want to be able to use Akka, or at least keep up with other developments in the Scala world, avoid the temptation of pretty Finagle and com.twitter.util!

Also, the sbt they use in the tutorial is an old version; the community is going through a big shift to sbt 0.10 now, which is a totally different system. Very different, and often outright weird to the uninitiated, but worth learning if you're starting new projects.

This tutorial is for Scala 1.8.1, and 1.9.1 is available now and considered stable. Use it!