Great write up! I had actually just done this on my site, but reading your article made me realize my dates weren't formatted correctly because of Timex. I grabbed your
to_rfc822 function and now my feed is validating correctly!
You may want to add some
link tags to your html so your feed can be autodiscovered. I found the link to your feed at the bottom of the page, but entering your homepage url into my reader didn't turn up anything.