nnrss would be better if it did not generate text/plain parts for items
that contain HTML.  As-is, when you discourage HTML and an item contains
HTML you see the unrendered HTML first.  K v will show you the HTML version
but it's extra keystrokes.

I use the this (from Katsumi :) to discourage HTML:

(setq gnus-buttonized-mime-types
      '("multipart/alternative" "multipart/signed")
      mm-discouraged-alternatives
      '("text/html" "image/.*"))

Boing Boing's RSS items (from http://boingboing.net/index.xml) are always
HTML so I always have to hit K v to read them.

I don't know the best way to check for HTML in elisp.  I've attached a
patch which uses a regexp to do the job.  The patch works OK for me but I
don't think it's ideal.  What's a better way to do this?

Thanks!