Pictures of human faces on social media more popular

On Instagram, pictures with human faces are 38 percent more likely to receive likes than photos with no faces, U.S. researchers say.

Study leader Saeideh Bakhshi, a doctoral candidate at the Georgia Institute of Technology College of Computing, adviser Eric Gilbert, an assistant professor in the School of Interactive Computing, and David Shamma, a Yahoo research scientist, looked at 1.1 million photos on Instagram, using face detection software.