Eclipse Blogs does have an RSS feed. Unfortunately it’s hidden. I’ll try to resolve this next week by adding a fancy icons somewhere on the template (somehow, I managed to assume ownership of this sort of thing). In the meantime, tack “/feed” on the end of the URL for the blog and you’re good to go (you can get the RSS feed for my blog here).
With FireFox 2.0, there’s a menu option, “Bookmarks > Subscribe to this page…” which gets you to the same place.