PayPal enables any individual or business with an email address to securely, easily and quickly send and receive payments online. Paypal allows for one-time sale payments as well as recurring payments to be setup.
Although we've all heard horror stories when it comes to paypal and their tendancy to often lock funds within someones account, this has yet to happen to me. I've been using paypal for 2 years and many of my customers really like the ease of use when it comes to making payments with paypal.
I'm sure if my account ever gets the freeze I'd have a different opinion, but for now, I'm very pleased.
Also, if you have the chance, make sure to get the paypal debit card!