From what i've read, it's hardly worth putting your time into running a faucet... You'll be lucky if you break even after paying for the domain name, the hosting, the funding, the withdrawal,...
OP was asking about playing faucets. For the rest I'm not sure. I'd tend to think that depending on which faucet you're running, you could pssoibly make a few bucks from it.
Now since the question is about playing faucets, yes, it's profitable if you're from Kazakhstan (or Venezuelian). Otherwise it hardly will bring you cents. Signature campaigns are much more profitable.