The most-liked photo of 2013. Thats a bit of advice from Aditya Khosla, a PhD candidate at MITs prestigious Computer Science and Artificial Intelligence Lab. Khosla, who previously came up with an algorithm to help actors tweak their headshots to make them more memorable, has crunched through 2.3 million Flickr photos in order to isolate the factors that make a photo popular. Khosla says his algorithm allows him to predict how many views your photo will get before you even upload it.