If you use these services be aware of a hack where the winner of a auction who uses the 'Pay Now' button that takes you from the auction page to Paypal can change the 'Ship to: ' address that your Paypal is set to temporarily, this means the thieves get your item. I just lost a $40 item, the thief signed for it with USPS and I have his address and name, you'd think that would be enough these days to get the authorities moving? Use your credit card where possible, Paypal and Ebay are not your friends.