@julian I checked most emails from those spambots and CleanTalk had almost all of them in their antispam list. Unfortunately it doesn't offer a Javascript way to access their API. I'm thinking of 'talking' to a PHP script while doing the registration just to check against their antispam list via HTTP requests.
Actually I don't see any antispam solution for node.js except yandex cleanweb which I saw somewhere.
On a side note, how are total users counted? Deleting users doesn't seem to lower the count just saying.
