No pay, no way lol. I think people are used to getting paid a few satoshis for filling out surveys 
This is quite true.Least you could do is reward people with a
faucet amount (100 satoshi-ish) just to get
people the slightest interested in it.
I got captchas to fill out rather than this! :>
This is a really interesting development, thanks for pointing it out! I happily splash out a few satoshis for interviews, but I would worry that a financial reward for a largely multiple-choice survey would be vulnerable to repeat answers, and that would make the results less reliable.