New Planet
I finally started using the code I’ve written to generate Planet Stacken instead of using the original Planet program. You’ll notice it uses the new Stacken layouts. There are also a couple of added features like an Atom feed, HTML tidyer, Technorati Tag summary and also the option of using either the publication date or the date of the last update for sorting, selectable per feed. I’ll publish the code too, just not right now.
Why the rewrite? Well, I didn’t enjoy fixing bugs in Planet and the included FeedParser, and the latter seemed to do some rather strange stuff, so I thought it’d be best to replace it.
There’s still a few bugs to fix and missing stuff to add, but overall I hope it’ll work. The feeds and HTML might not validate right now, and cElementTree fails to parse some valid XML, but I’ll get around to fixing that eventually. 
Oh, by the way, the project needs a name. It contains an Atom/RSS feed parser, a feed joiner thing and an output template library.
Update:
Created a minimal project page.