Thumbnails, but yes.  Just tested it.  Wasn't aware of that, but doesn't matter too much for me.  I don't use it for images, am not ashamed of my images, and you only see <i>what file</i> was changed, not the changes made.  An unlikely security problem, but probably a bad idea anyway.<p>With a little complaining, I'd bet they'd put up an opt-out option, take out image thumbnails, and hopefully a layer of security over the feed.