One thing that I've seen that's a problem with this kind of thing (whether given out by humans or faucets), is what people can do once they get the coins. You're probably not giving them enough to buy anything with them, so what do they do? Just hold them?
If I gave you 0.01 Serbian Dinar, what would you do with it? Maybe look at it, and say that it's cool.
What do people get out of faucets? Just publicity?
I think the first Bitcoin faucet was giving out 5 bitcoin to each person. That was before it had any significant monetary value though. I'm not sure what Bitcoin itself got out of that, but if those people held onto those 5 Bitcoin, they would have the opportunity to exchange them for money several years down the road.
If I gave you 0.01 Serbian Dinar, what would you do with it? Maybe look at it, and say that it's cool.
What do people get out of faucets? Just publicity?