I LOVE receiving green dot moneypak refill cards as payment from customers! It is the easiest thing ever. They go to the store and purchase the card and add the amount of money they want to give you onto the card. Then they send the code to you and you can easily log into paypal to enter the code.
Easy as that..after you submit the code, the money from the card is now in your account.
The only minor problem with this is that the card also costs the customer $4 or something like that as a 'refill charge'.
Also the minimum/maximum you can add onto the card is $20-$500