I much prefer this forum to FB. I don’t always log in, but I do read the posts and comments and I know of some people who don’t sign in but have many of your books and follow your updates and the forum avidly. The search facility is also much better than FB and makes it very easy to access the treasure trove of info. I wish there was a better alternative.
On a technical note, I did wonder if some users haven’t realised with Google reCAPTCHA they need to click on “I agree to these terms” and go through the additional measures to log in? Would using Sucuri help to stop the spammers? They’re different to many security solutions as they redirect your all website traffic through their firewall and filter out anything malicious before it gets to you. I’m not a Sucuri employee or affiliate, just a relieved user who had to get a hacked website protected a couple of years ago.