I agree that faucets can be profitable to the owners, but that in the long run they're not all that great if you're looking to make a noticeable amount of bitcoin. The only way you could pull that off is with a lot of referrals, but I wouldn't know since the most I've had on any faucet is like three. If they weren't profitable, then they would shut down. I can't imagine a site like Moon Bitcoin going down anytime soon since they have about 20-25 ads on their site, it's ridiculous how infested that site is. Plus that sometimes ads with sound come on for no reason, just to get you to look at the page again in order to shut it off.