Last year I created Feedbase, providing Atom/RSS-feeds via nntp.
Today I finally got my act together and updated the documentation-page with a short section on how to set up Gnus, a screencast on how to use Feedbase in Thunderbird and a section on using slrn to access Feedbase.
I hope this will help anyone interested to get started. I'm enjoying Feedbase a lot. ⊗