The question is not where they have to wager and how much; now, the question becomes whether the player has an option to opt in for the bonus or not. If these bonuses are tied in automatically upon deposit and there is no way to cancel it, I would consider it scammy behavior. But this should not be the case. I am not familiar with how it works.

I have sent a private message to Nitrobetting, and they have not come to this thread yet. I am not going to take a risk and make a deposit to check how their bonus system works. If another member can confirm how it works, that would be better.