How Do Paypal Credit Cards Work for the Buyer?

How It Works
According to PayPal's website, once an applicant is approved for the PayPal Extras MasterCard, an additional funding source is added to the applicant's PayPal account. The PayPal Extras MasterCard, however, may not be used to access PayPal funds. Applicants will receive their PayPal Extras MasterCard approximately seven to 10 business days after the application is approved.
Cardholder Benefits
PayPal Extras MasterCard holders earn 'Reward Points' when they use their credit card for purchases. The reward program specifies that three points are earned for every $1 spent at gas stations and restaurants, two points for every $1 spent at PayPal and eBay, and one point for every dollar spent on all other purchases. PayPal Smart Connect Cards are not eligible to collect Reward Points on purchases.
Redeeming Benefits
As with most credit card reward programs, the Reward Points associated with the PayPal Extras MasterCard may be redeemed for merchandise, travel rewards and gift certificates as well as cash deposits in a PayPal account. Reward Points expire two years after they have been issued.
Extended Buyer Protection
The PayPal Extras MasterCard provides 'Extended Buyer Protection' at no additional cost when cardholders make a payment via PayPal. Additionally, PayPal Extras cardholders are not liable for any unauthorized charges made with their card.
Exclusive Offers
Finally, PayPal Extras MasterCard provides cardholders from time to time with exclusive offers. Such offers generally provide for deferred interest on purchases.