I think we can create a thread here where we can post email addresses which are spam so that other faucet owners might be aware of. I have a list of emails that I just recently blocked. All faucet owners will have to cooperate so we can stop those bots and spammers.
it's useless because they need just a new email/address and they start scam again!
I think a plausible solution is an OCR/captcha that avoid people to use bot, but ban some one is not a solution.