Information on Rebates Informative - Rebate Checks May Bounce
I just read an article which reveals that the largest rebate processor in North America doesn't have enough funds to cover checks recently sent out. Turns out they have over $11 million in rebates processed but only have $3 million to cover them. They have contacted their clients to obtain more funds but it's unknown when that may happen. So be careful because your rebate check may bounce causing you to pay a recovery fee to your bank.
BTW a few years ago I stopped buying anything that had a mail-in rebate.