Inflatable jungle gyms, action images from Sochi stitched together and predictions for the next big art cities in this week's look at the web

By trimming roughly 20,000 selfies (each drawn from five prominent cities across four continents) into a representative 3,200, researchers at Selfiecity have amassed findings about mood, frequency, gender and geography—building a profile of the internet users of each area. Using theoretical, artistic and quantitative methods, they’ve constructive captivating visualizations, an interactive photo-board and even an essay on the relationship between selfie and society. Do angry people tilt their heads in photos? The answer might just surprise you, as will the depth of this fascinating scientific undertaking.