Upload & Sell: Off
is it worth getting money back if done correctly? yes.
I remember when Canon used to have rebate program where you have to mail in UPC, receipts and forms. It was just plain a PITA. Even if you did everything right on your part, they still don't honor it. You have to call the rebate center a few times and raise hell before they approve it and mail you a check.
I am so happy Canon moved towards instant rebate.