Syndication of Project Announcements
I just realized yet-another-good-use-for-syndication: syndicate release announcements for projects. I want to know when there is a stable release of certain tools that I use, and the typical "subscribe to the -users or -annouce mailing list" is not so hot for automation. I would prefer to have an arbitrary pull that is scripting friendly. Wheee, syndication wins again.
For example, the RSS feed from my interception library category serves as a nice pull style announcement. Now if a standard schema for announcements can be created the requirements for a much more useful freshmeat/version tracker are there -- where you can subscribe to a feed for just the packages you care about.