I've been trying out the moon faucets for a few months now. The income is on the order of pennies a day claiming nearly hourly...but it IS free, and with coin value EVENTUALLY going up, why not? To give a frame of reference, between 3 moon faucets and the freecoin sites (https://freebitco.in/?r=11645455 and http://freedoge.co.in/?r=1786063) and bonusbitcoin (http://bonusbitcoin.co/?ref=FEC639AC80DD ), I've totaled about $6 worth of free coin over the past few months of collecting (with no referral bonuses btw).
I'll look into earn.com...sounds like a crypto version of MyPoints...?