I'm looking to set up a little bonus on the back-end of an offer I'm building. It won't be enormous traffic, but they'll be all buyers, so it'll be potent. I'd like to be able to close the deal with them by having the surveys be incentivized, so they know they'll get something for their time. But I'd also like to get paid for referring them. Anyone know of offers in which this is the case? Is there some database where I can find offers like these, or am I looking for unicorns here? Thanks!