Hi - not sure if anyone know this or used them but i just bought something from Gamefly.
I personally only used them a few times with absolutely no problems at all. However i did notice because i use Paypal to pay in the past, when i bought something again today, as soon as i submit my order it automatically finalised my order and took payment without me needing to authenticate to Paypal.
At first i was like WTF, i was sure i never put in my credentials like your need when you buy most items with paypal.
After much digging about in the net, i finally found the reason. If you log into Paypal, it seems Gamefly had setup a transaction agreement to make payments automatically with my purchases. Obviously grew quite concerned, and turned that option off by cancelling the transaction agreement.
I didnt even recollect it had set this up for me. ??