By now the vast majority of people have settled into using the Internet as a 24-hour shopping center, where almost anything imaginable can be purchased and shipped right to your door. From goods to services, everything under the sun has a digital price tag. While most of us have used a credit card to buy something online, many of us have alternatively chosen a more secure option, especially when closing deals with individuals on online auction sites like eBay. That option has traditionally been PayPal, which in many ways, has helped to revolutionize the way people transfer money. In fact, PayPal has been so successful, and essential to eBay's success, that eBay bought the company in 2002.