"Never tell people what to think about stuff. Tell them about it and they will surprise you with their ingenuity." (To paraphrase Patton.)
Thanks for the thoughtful comment bmelton. I very deliberately restrained from commentary to focus all the attention on what I really wanted to say: the picture.
I tend to overindulge in commentary and analysis, but I believe that even more than as filters of news, the true strength of reddits is in analysis filtering.
I also submitted it to Reddit, where it's had some success too. http://www.reddit.com/r/reddit.com/comments/8yhay/what_if_yo... (and has proved quite controversial.) But the most striking thing is the different quality and spirit of their comments to those from here.