What i've gleaned from this is that it can only really be profitable (and not that much) if you have a faucet website.
It's going to get less profitable as people learn that faucets are a waste of time.
Every time you start to think about whether something is profitable or not check out how much time it will take you and how much money you'll be able to make per hour. For me anything that pays less than $10 per hour is a total waste of time (I'm talking about work, not pleasure). Faucets will pay you maybe $1 per hour if you farm a bunch of them at the same time. Even if BTC goes to 20k this will be $4 per hour of your time. Not worth it!
I see. I think that goes for most things though - any PTC stuff for example is never going to generate you enough income.