Spam kills engagement and credibility. Do you rely on automated filters, CAPTCHA, manual moderation, or AI-powered solutions? Which combination works best without turning away legitimate users? Have you noticed certain platforms handle spam better than others?
I just use a single custom Q&A and 24 hour monitoring. The Q&A stops most spammers from registering and the little that does get though is usually dealt with by moderation within a few minutes.
On the forums that I manage on behalf of corporate organizations new registrations are manually approved which results in zero spam.
1. I now require admin approval. I don't get as many new members where this is a problem. This is one of the best ways to detect and stop spam before it impacts your forum.
2. I still use a spam security question to further reduce spammers.
3. I ask a required question of why they want to join the forum. Spammers usually put in a few random letters. That makes it easy for me to Spam Block them quickly.
4. I add a lot of gTLD email domains (i.e. .club, .xyz, etc.) to blocked email addresses to help mitigate spammers.
5. I enabled Stop Forum Spam and Project Honeypot.
So far, these methods are keeping me at a 0% spammer rate.