Wikipedia:Don't beat someone beating a dead horse
From Wikipedia, the free encyclopedia
Essay on editing Wikipedia
 | This is an essay. It contains the advice or opinions of one or more Wikipedia contributors. This page is not an encyclopedia article, nor is it one of Wikipedia's policies or guidelines, as it has not been thoroughly vetted by the community. Some essays represent widespread norms; others only represent minority viewpoints. |
"I have posted this message here to say that you should stop posting messages here"
Don't do this. It makes no sense, never achieves what you want to do, and revs up the other person even more. If someone is beating a dead horse, they will usually stop if you stop telling them to stop. If you keep posting messages telling them they should stop, they will usually keep going.