I really like PayPal (the concept more so than the company). I tend to buy a lot of things online for various reasons, and PayPal allows me to speed up the transaction by allowing to not have to enter in a ton of info on every site I buy from. Just click the "Pay with PayPal" button and go. That, and it makes buying stuff between private individuals much more convenient. That said, it can be a ***** to get started on PayPal, but once you're set up, it's easy.