Whuffie, a term coined by Cory Doctorow.
Whuffie has replaced money, providing a motivation for people to do useful and creative things. A person’s Whuffie is a general measurement of his or her overall reputation, and Whuffie is lost and gained according to a person’s favorable or unfavorable actions. The question is, who determines which actions are favorable or unfavorable? In Down and Out, the answer is public opinion. Rudely pushing past someone on the sidewalk will definitely earn you negative points from them (and possibly bystanders who saw you), while composing a much-beloved symphony will earn you positive Whuffie from everyone who enjoyed it.