Several online stores only accept PayPal for payment transactions. PayPal is a third-party online payment option for small businesses that currently don't have a merchant account. PayPal is a cost-effective way for small businesses to accept payments online. Customers are not required to have a PayPal account in order to purchase online; with PayPal, you can accept their credit card number. For more information on PayPal, go to their Web site by clicking here: PayPal