It appears as though Google AdSense is cleaning house, banning many free Bitcoin faucet websites for violating their terms of service. While I haven't looked into the matter fully, I assume it has something to do with not allowing websites that reward visitors (whether or not it is an incentive to click ads).
Whatever the reasons, many Bitcoin faucets are running dry as their owners scramble to find other ways to monetize their websites, offer free Bitcoins, and stay profitable. For many faucets, AdSense was their main (or only) source of income, and to lose it is a deathblow.
One faucet that's already closed the doors is Donaldcoin.com, mentioned in a previous post on this blog. It's too bad, I've earned thousands of satoshi's from that site, but I think they might have had more shady ad violations than other sites and either way, the owners have shut it down.
Another site recently banned from AdSense is FaucetGame.com (and their sister site, GameFaucet.com). FaucetGame.com has removed their faucet and drastically reduced payouts on the games. GameFaucet.com has taken similar measures. While both sites continue to operate for now, it'll be interesting to see if they can survive without revenue from AdSense.
So I think Google has made it clear that free Bitcoin faucets aren't allowed on the AdSense network. This will mean lots of changes for existing faucets and Bitcoin faucets in the future, although it's tough to say to what extent it will go.
Only time will tell but it will be interesting to watch and see.
