We've written before about Bitcoin, the electronic currency that may be gaining some traction.
The New Yorker has a fascinating summary of the situation here. (another cool reason to use the library resources: you can't get to the full article on the open Internet)
Bitcoin is untraceable, used by both peaceful nonconformist types and criminals, and invented by somebody or something called "Satoshi Nakamoto"- who doesn't exist of course.
It's pretty intriguing, given the ongoing debasement of official fiat currency.
The inventor wrote a technical paper explaining Bitcoin here - it's quite interesting.