The term Bitcoin has been popping up over the past few months & years as a new payment model/method based on a P2P system. Wired.com has but together the basics around Bitcoin, giving some insight into what it is, how it works, and also what concerns exist around it.
Check the article here: http://www.wired.com/wiredenterprise/2013/11/bitcoin-survival-guide/#!
Update: Talk about perfect timing, the Bitcoins site has been updated to explain stuff as well