I have maybe a very stupid question....Why do spammers join my forum, and not post.
They will be back. It might be 2 weeks, it might be 2 months, but they will be back to post some spam. On my wifes forum, one spammer came back over 2 months after the account was created.
I often wonder if those bots go through an account creation phase - where they will sign up on thousands of forums. Then, a few days, weeks or months later they will go back and start posting. Maybe the accounts are sold to other spammers?