Nice share. easy method that works for years.
I did something very similar a long time ago. i iframed the survey on a page that had a count-down timer on it (5 minutes). told my leads they have to fill in the survey before the timer hits zero for them to be eligible to work for me. got all my traffic from job postings. unfortuntely my cpa network banned me when i became eligible for payout. turns out they didn't like my traffic source. i was using some tiny network nobody ever heard of. should have stuck to big networks like AWM ( too bad they werent around back then!)
You can write "I will use social media to send traffic to my website" or just "facebook traffic".
read the first post again, it's all answered there. use any survey. best bet is pick a few that look good, split traffic to all of them, then after a day, or a week, or when you feel you have enough data, sort out the top performing offers and ditch the rest. get traffic from fb groups, job classifieds, etc.