The Washington Post (Feb. 16) – Choose an emotion instead of just a like, and your friends get a better sense of how you feel about their posts. But doing so also tells Facebook something about you. And that is one big reason Ben Grosser, an artist and a professor of art and design at Illinois who describes his work as “writing software in order to investigate the social effects of software,” made an extension that randomizes what you tell Facebook about how you’re feeling.