CNN.com ran a great story this week featuring hi5 as a leader in developing online virtual currencies. Launched in December, hi5's currency, called hi5 Coins, has quickly become a familiar form of payment for hi5 users purchasing goods and services on the site.The article profiled a hi5 user in Mexico named Santiago Martinez who uses hi5 Coins to purchase virtual gifts for friends. The full story and even a picture of hi5 Coins is available on CNN's site here.