Turning on the CAPTCHA for everybody has slowed the flow of coins from the faucet to a very manageable trickle.
Oh, and regarding anonymity versus non-anonymity: I was careful not to tie IP addresses to Bitcoin addresses when implementing the Bitcoin Faucet. So I remember that somebody at IP address 96.240.216.119 received bitcoins at 12:30pm today. And I remember that somebody with Bitcoin address 1P3rpbSybuGgeL1bRwCJFWbn4yBjRNQrbY