Description
It's been shown that humans often warm up to someone based on the welcome-ness of their facial expression. Roboy's designers kept this in mind, and wanting to get things right, they crowdsourced the design of Roboy's simple facade to Facebook, morphing the final product into something very friendly-looking, based on the number of votes each face received.
SOURCE:
http://technorati.com/technology/article/meet-roboy-your-social-crowdsourced-robot/