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Other than that, I confess that I didn't spend much effort in publishing links to other casinos, so I'm not sure if they are profitable or not, but one thing I know for sure: the sites profit much more than the users who publish them.
The truth is, none of us earned money using referral bonuses. Why? One thing is that what we are sharing is a casino, and we know many people are hasty when it comes to casinos or gambling, so it's not easy to attract or refer one. Second, we are not popular. Yes, popularity is one thing that could make you earn referral bonuses. For example, streamers, vloggers, etc. can earn from referrals as many of their viewers could be attracted or tempted to try what they are playing, or simply streamers or vloggers can earn from advertising the casino and using their links.
For us normal people, it's hard for us to attract people to use our referral links. If we can get some, it's not enough to earn a fine profit, but maybe by hard work some can earn from it as there are a lot of ways to advertise now, especially on social media.