nIt's a smallish Perl script that runs next to Peerkat's Python scripts. One one side, it's a tiny HTTP daemon that listens on port 5335, and is designed to react when you click one of the coffee mugs on a Radio weblog. On the other side, it goes and gets the RSS source that is passed in the click, and grabs the title. It then authenticates (as administrator) with the Peerkat server, and uses the administrative feed function to add the RSS URL into Peerkat's aggregator.