before I had a credit card, I was just about to take Paypal, but i've found too much forums with negative post - a lot of people lost mucht money, locked accounts by paypal, contact only with phone(maximum a P.O. Box), no real adress nearby to me to force the law....No i don't transfer any money with this service.
To minimize the risk I look at the company before i'm giving my credit card data - and it's a limited prepaid one.