The code for Planet Scala is now hosted on GitHub. @DRMacIver explains the rationale behind the move:

I really don’t care about the web frontend. As far as I’m concerned, planet scala is a feed aggregator that happens to have a web page. […] What I really need is someone else to do it for me. Someone who actually cares about the web page, is good at it and has the time to work on it. […] If only there were some way of getting a distributed group of programmers with disparate interests to collaborate on a project…

Tada: http://github.com/DRMacIver/planet-scala