The most you can make at a campaign is like $7 a week lol.
Or I think it was $12? I forget.. but its not much. I can go flip hamburgers and work at mcdonalds and that itself would make more money in a week then just doing a signature lol.
Maybe in your country that's possible. But for third world countries, you can't flip burger and earn that much.
You'd have to spend a long time in front of your screen to earn 3BTC from faucets.
If the target is 3bitcoin in a year through faucets, then without any other thinking one is to spend long time infront of the screen as mentioned. But user will get out of earning when he gets one bitcoin.