Just want to say thanks for that new feature, and point it out in case it got overlooked. I think this, in time will go a long way in calling attention to images that didn't get as much feedback as, perhaps in some cases was deserved, right from the get go.
I decided to replace the periodic personal messages (asking you to make a comment) with the "Lonely Images" list on the navigation bar (lower left). This will essentially allow people to "opt out" of getting the comment requests while giving maximum opportunity for images to get comments.