As to the spammer members, to the best of my knowledge there is none.
I have registration set up so that I have to personally approve each new registrant.
Before I approve I do a Google search on their username, email address, and-if given-their web site address. If I get the slightest hint of spam I delete their registration and, in most cases, block their email address. Most times a Google search on their email address will turn up other sites that list it in their blacklist.
I figure I'd rather deal with a legitimate registrant complaining that I stopped their registration than have to deal with the spam. So far I haven't had the first complaint.
![:wink:](https://cdn.jsdelivr.net/gh/s9e/emoji-assets-twemoji@11.2/dist/svgz/1f609.svgz)
I'd rather have fewer legit members than concern myself with the numbers.