I just realized that my RSS feed has been non-compliant up until now (just fixed it). I was advertising myself as an RSS 2.0 feed, but publishing an RSS 1.0 feed. RSS is very confusing because there are at least three different incompatible versions: One from Dave Winer (RSS 2.0), one from Netscape (RSS 0.9), and one that has been hacked up with all kinds of extensions to make it more usable (RSS 1.0).

Atom, by comparison, is much simpler, cleaner, and easier to code. Moving forward, I'm putting all my efforts into Atom, but I'll keep the RSS 2.0 feed running as well (bugfixes only, no new features over there).