I just got a $25 giftcard from MyPoints last week for Rainforest, and it IS a GIFTCARD, not a paper cert.
Just wanted to let everyone know.
But it still shouldn't make a difference. They'd just have to run two giftcards through the machine.
I believe it expires one year from issue, and they now start taking off admin fees after so long (I can't remember what it is right now, but I posted about it last week).