> The equivalent of "locals don't go to this area after dark"? I instinctively like it, but only because I flatter myself that I would be a local. I can't see it working to any scale.

I was think it could work if 1) the noise is just obvious enough that a human would get frustrated and block without wasting much time and/or 2) the practice is common enough that everyone except total newbies will learn generally what's up.

> The equivalent of "locals don't go to this area after dark"?

We have this with human online places already it's called 4chan