Yah that wont work out. You might might get a check but its only a matter of time before you get canned or have that offer removed from your account.
Unless the demographic of ppl filling out the offers fits the original offer then the advertiser wont make any money to pay you. Like if you iframing a mac makeup kit with a "win a free gucci purse" its could work because girls that want a gucci purse will also me interested in the mac makeup. But if your iframing a gift card with some world of war craft shit that fuck all will happen on there end