Bitcoin

       Here's some links on the subject.

                        http://www.wired.com/magazine/2011/11/mf_bitcoin/

                        http://www.washingtonpost.com/blogs/innovations/post/why-reports-of-bitcoins-death-may-have-been-greatly-exaggerated/2013/03/26/3a010942-9618-11e2-8764-d42c128a01ef_blog.html

                        http://en.wikipedia.org/wiki/Bitcoin

                        https://en.bitcoin.it/wiki/Main_Page

                        http://lifehacker.com/5991523/what-is-bitcoin-and-what-can-i-do-with-it

                        http://startbitcoin.com/