Back to Twiddling Bits with Susan Kare, with Susan Kare.
Where Did the Facebook Thumbs Up Come From?
Soleio traces the Facebook thumbs up to glyphs Aaron Sittig had already drawn for ranking stories in News Feed. A hand felt native to Facebook, which already used gestures such as the poke icon, and human anatomy was a load-bearing idea for a symbol meant to last.
The News Feed team realized a down rank would help people see less of some stories. The thumbs up and thumbs down were one experiment among several, and the thumbs up started as a placeholder. Hearts and stars were tried as other expressions of a like. The thumbs up was the one that felt most native to Facebook and felt like the Facebook way. Soleio gets assigned far too much credit for the mark. News Feed gained commenting and likes, and a read-only screen checked once a day became a place for conversations, a complete Facebook session without leaving News Feed. The icon later had an outsized cultural impact he had never expected, for the feature or for Facebook. People concentrate energy on an icon once it stands for a company, a product, a service, and a way of doing things.