" "Do these requests indicate a larger issue with my site?" For example, if you run a forum and it's trivially easy for blackhat SEOs to register for your forum

" "Do these requests indicate a larger issue with my site?" For example, if you run a forum and it's trivially easy for blackhat SEOs to register for your forum and drop a link on the user profile page, then that's a loophole that you probably want to close." Wouldn't that be like every vBulletin site?