FWIW, this is a referral link, and the OP stands to make $5 for each referral:
"For every friend who signs up from your referral links & completes the survey at the end of the beta test, we'll pay you $5, whether they ever become a paying customer or not!"
"For every friend who signs up from your referral links & completes the survey at the end of the beta test, we'll pay you $5, whether they ever become a paying customer or not!"