I have actually tried daily logins on mega bonanza and stake. The bonuses are legitimate, and you do receive free coins or sweeps every day. However, converting those into real money is a slow process unless you get very lucky with a big win. For example, crown coins require you to reach 50 sweeps coins before you can redeem, and that can take weeks if you’re only using daily bonuses. It’s enjoyable if you like playing for free, but it’s not a reliable way to earn significant cash.