About 500 users have passed the quiz since launch (despite frequent offs due to bugs, running out of money, running out of daily quota, etc) but I observe some share of fraud too. It is not very large but concerning. To reduce the incentive for fraud, the reward will now be reduced to $2.50.
Curious about how you detect frauds. Is it based on the number of times the same IP address has passed a payable quiz or is there more to it? Thank you.