I'm currently setting up a deal to trade my MacBook for an iMac. I want to minize my wires and I would honestly rather have an all-in-one (and I'm looking for a change, Leapord!). I'm trading with another member here -> http://forums.macrumors.com/showthread.php?t=582148 < - I'm wondering how we should go about the shipping process. He wants me to ship my Mac out first and when he receives it, he will ship the iMac out and when I receive the iMac, I will PayPal him the money to cover a new battery. He is going to be giving me his dad's full name, phone number, and address. What else should I know to protect me and my investment. He has been a member here for a long time so I'm not too worried. I'm just looking for some advice and help. Are there any services out there that we ship the computers to, they verify and then ship them out the rest of the way. So if I ship my computer out and he doesn't, then they will ship my computer back to me after a certain amount of time.