Worked mostly for me too.... until one rebate from "MGE Company" for something I got at Frys.
The company's rebate web site had all my information with red:
Rebate Disqualification
Reason: Missing reciept
Mind you, the rebate form was one of those rebate receipts, you know, where the rebate form is the receipt....
I never heard back from the company's "Customer Service".
So, I will never buying anything from MGE Company, and I avoid anything with a rebate, especially from Frys, with few exceptions.
(Staples and Costco have been pretty good about their rebates.)