how can I use comments in the file containing the feed urls.
The hash symbol # causes a bad feed exception.
Well, this seems to work:
git annex importfeed --fast http://www.starshipsofa.com/feed/#award-winning-science-fiction-podcast
But that limits you to url formatted comments. Instead, you could make
the list of feeds into a shell script.
# award winning science fiction podcast
git annex importfeed http://www.starshipsofa.com/feed/
Or, you could strip out comments from the list of feeds before passing it to
sed 's/#.*//' feeds | xargs git-annex importfeed
How you do it is really up to you..