I recently noticed a question, its title was "norm of the operator". I wanted to know what the question details were. To my surprise, I found this:
Dghggfssrrrrtiij Ffhjhhh ggssfvg guijvcd
I decided to see to see what the question's revision history was, and I saw a completely out of control behavior by the user.
Many experienced users have edited and corrected this question posted by the user. I noticed that all of the edits were changed by the user, back to the initially obscure format of the question, and now, the question looks completely out of context. I haven't flagged the question, because it has a well received answer, and the question keeps changing from time to time.
Shouldn't this question be deleted? Can such users be blocked? What can be done to prevent these edits?