Facebook emoticons development revealed through a rigorous process. Facebook engineer Arturo Bejar said, emoticons it departs from the book The Expression of the Emotions in Man and Animals, Charles Darwin published works of the late 19th century, around the 1800's. The engineer also revealed emoticons created by hiring a UC Berkeley psychologist, Dacher Keltner. Initially the idea was only in the form of text emoticons are presenting a problem communicating. However, because the words felt less attached, end users naturally create a text-based emoticons to express, for example :) for a smile sign. And they feel there is still a lack of individual types of expressions emoticon. From there, emoticons were created based on the image.
Source: http://teknologi.news.viva.co.id/news/read/412811-ini-sejarah-facebook-ciptakan-emoticon
