""I often have difficulty to understand your American slang. The context is not always clear.
Now I really do not know what you talk about. What do you mean with "signing the post" ?
What could be wrong with it ?""
I agree, what could, indeed be wrong with signing a post.
But the guidelines, the rule book, clearly outlaw such behavior.
I can't see what harm would come from my putting "JBTHEMILKER" at the end of my posts.
But those are the rules.