1) Fictional currency 
Whuffie is the ephemeral, reputation-based currency of Cory Doctorow`s science fiction novel Down and Out in the Magic Kingdom and his short story Truncat. This book describes a post-scarcity economy: All the necessities (and most of the luxuries) of life are free for the taking. A person`s current Whuffie is instantly viewable to anyone, as eve.....