One couple paid for a frozen embryo transfer cycle in Bitcoins, leading to what Dr. C. Terence Lee describes as the first baby "bought with Bitcoins," CNNMoney reports. Lee, a California fertility specialist, is an early pioneer in the Bitcoin economy, and he has a sign posted on his clinic door that notifies patients he accepts the digital currency as well as Visa and MasterCard. So far, while Bitcoins have grabbed headlines, it remains a rather hard-to-grasp concept for many. You can buy Bitcoins on sites such as Mt.Gox, but you can also "mine" them online, as MSN moneyNOW's Kim Peterson wrote in April.