Don't forget to use Top Cash Back + Cardpool/Raise. You could find some phenomenal deals on Raise + TCB.

I once bought a ton of Wholefoods GC @ 10% off and resold to Plastic Jungle @ 92% of the value among other vendors.

The problem with Raise and this is where it burned me, as I was playing around with the deals, the seller on Raise determines how much to sell for, Raise will then email/ship out the card. What I didn't know when I bought a Home Depot card ($500ish) it was merchandise credit and Plastic Jungle wouldn't buy it.