Why do you call them faucets btw?
What I mean is that I am going to websites where I just put my address and earn bitcoins for free. No ads, no action involved, nothing.
Can't understand it. They can't be making ad returns from that.
Are they tracking your ip and wallet adress maybe to steal money?
The original bitcoin faucet was literally called a faucet and had a picture of a faucet
You metaphorically turned the dial and bitcoin came out. If there's nothing on there, and they're only trying to give you coins, then refer to my first reply. That's the only reason I know of; they can't steal your coins by your public address. However, if you have adblock on, it's possible you're not seeing the ads that should've been there. If they're handing out like, 0.00001 BTC or something, they def make more on ads than they do giving out coins. Every view might earn them minimum a penny, and they'd still make a (very small) profit.