No need for it to be an issue though. Generating an Atom feed is dirt simple. I wrote my own Jekyll template to do it:

https://gist.github.com/graue/5184195

The only Jekyll-specific stuff is the first three lines and the `{{ .. }}` and `{% .. %}` templating code.

(For those who don't know, Atom is the better, cleaner replacement for RSS, supported by virtually all RSS readers. I like to promote RSS since people know what that means, but when I go and actually implement it, I spell RSS "Atom".)