As of this writing, this picture has 540 views on Flickr. I didn't title it; I didn't submit it to any groups on Flickr or share it otherwise; I even didn't correct the orientation of this twilight picture of the cement bottom of a bay window. But still, this picture is quite possibly the most popular photo I've posted to Flickr.
Does anyone have any explanation as to why this particular picture is so popular? I'm stumped.