They weren't sophisticated tie-ins, but they did provide an easy way to process a transaction over the web, including secure payment and rudimentary information about the name and type of vendor involved.

FORBES: The oops factor

New York-based 800America.com touted its Web sites, offering everything from online payment services to sales of closed-out merchandise.

FORBES: Under The Counter

Many people "mine" the coins by participating in that network and a growing number of web stores and online firms accept bitcoins as payment.

BBC: Virtual cash exchange becomes bank