Send funds directly to a seller from a verified bank account or from a credit card
Sellers can see only your email address, can't see your credit card number (it is safely encrypted through PayPal's server), which limits the risk of unauthorized use, so wit PayPal the person you are paying cannot take further money or change the amount.
Automatic payment tracking - You can see all your transcation in your PayPal account.
With PayPal you have access to neutral arbitration over a disputed payment, e.g.when you paid but goods never arrived. Similar services from credit card companies are highly biased toward the vendors.
PayPal Buyer Protection offered on qualifying items - up to $1,000 in free coverage.
Ebay owns Paypal, so if you spend a lot of time on eBay, having Paypal comes in handy. A lot of ebay sellers only accept Paypal payments.
