I couldn't resist 
I set this as a secret question (with a very long random string as answer), but after that, the answer showed an empty field and the why is this blank? link showed "disabled". So I got nervous and wiped it again.
It's safe not to set it up. If it locks the account and do not help to get recover the account then the feature is not helping at all. It's without any purpose and better to disable it. I set this as a secret question (with a very long random string as answer), but after that, the answer showed an empty field and the why is this blank? link showed "disabled". So I got nervous and wiped it again.He can do it, but it must be more than 24 hours from his first post. But for this one, just report one post to the moderators so they can merge the post if the user ignores your suggestion.
I know he can but this is not a service thread in marketplace so I did not think it was worth mentioning. The discussion is not old too. Many users are still making their posts. It was assumable that in few hours we will have more comments.