In a very interesting note on blogging and rss syndication: I’ve learned that most of my dinosaur feeds (I’m using Brent Simmon’s Net News Wire 2.0 beta release) are either a) not producing RSS feeds or b) using a different URL for their feed than previously. Not a good thing if you want people to read your blog.
I hacked the URL of the feed and tried atom.xml and was able to pull all the feeds with no problems.
Also of note, all the feeds were generated by MovableType. Is the upgrade from 2.x to 3.x breaking the RSS?