Should the Comment RSS feed have stuff like:
a:1:{s:5:"en_US";s:13:"Misc Pictures";}: Healthy Lungs by jamie thompson

For the comment titles?

http://gallery.markheadrick.com/index.php?rss=comments&type=gallery&lang=en

Think I might go look at the code and try and clean it up.

Made issue on GitHub: https://github.com/zenphoto/zenphoto/issues/1010