Having just started to look at Komar and Melamid’s Most Wanted Paintings - paintings created based on actual polls, where people could say what they liked - I thought finding the photographic equivalent couldn’t possibly be that hard. I went to Flickr, which I use only very occasionally (and thus don’t really know all that well), and went looking for the photo that had the largest number of people calling it a “favorite”. The utterly unscientific results: 4,967 people call this photo a favourite (with 1,308 comments), followed by this photo (2,464 favourite votes), this photo (2,238), and this photo (1,935). Over at photo.net, the all-time favourites (based on all-time average ratings) are this photo, this one, and this one.