They are made for two reasons, one they volunteer, one obvious: 1) Show beginners how does it feels to "own" fractions of bitcoin (educative?), 2) Make money. The second is accomplished by advertising, very heavy advertising.
Needless is to say, it is mainly an advertising pit, and the only one making real money is the one running the "faucet."
Needless is to say, it is mainly an advertising pit, and the only one making real money is the one running the "faucet."