An example ^.
Can people tell them to put meta-related stuff to Meta instead? It's a waste of time and daily vote limit.
We already tell them this on the page you write questions:
We also have fairly extensive documentation about what is on-topic on the main site.
When else would you like us to tell people this stuff. Short of actually physically talking to every new user before they post something, we've done about as much as we can. Just flag to close and migrate to Meta (when you can).