Here's two useful articles if you're interested in starting your own Bitcoin Faucet:
Introduction to Bitcoin Faucets - Behind the scenes
How to setup a Bitcoin Faucet - Beginners
Might also want to check out our Faucet, paying up to 7000 satoshi
Bitcoinz Faucet
even before clicking in anything two pop ups showed up... its the worst type of faucet imo.
To the topic. the greatest thing about faucet is : when a new faucer appears and you get a lot of referrals on it. that would work good.
for example in the dogecheckin.com that pays in dogecoin. only for referrals i get near 1k doge weekly without doing a single captcha.
I suggest using some sites like freebitco.in and you can even earn up to 0.001 weekly. its good if you dont want to spend money in bitcoin but want to understand how it works.