usage survey

A few parts of gnus have been suggested for obsolescence. I thought it
worthwhile to get an idea if anyone is using these features. I'll be
sending a slew of messages, each with a subject like
Subject: "hashcash survey: Please reply if you are using it"

If you are using any of these features, please reply to the
corresponding email so I can tally the results (I'm too lazy to set up
anything more sophisticated).

Thanks,
Andy
-- 
Andrew Cohen