> Then it will select the best picture and put it to the top of the photo feeds of people most interested in that image (like fans at the ballpark)
Great idea, but I don't think I've ever seen a description be so hand-wavey. You might as well put "Then some magic happens" there. Some details on how this happens (face recognition? social voting? views?) would be nice.
edit: I guess I should RTFA. It's still really high level, but later in the article Nguyen explains that they use views to measure photo quality.