Summon The Tumbleweed

I've done this a couple of times inadvertently, but now I'm thinking I could save embarrassment by doing it on purpose.

So, you post an idea. People may or may not annotate it. If they don't, maybe the non-sequitur is the idea itself, which is quite efficient. If they do, you or someone else might reach the point where an annotation is a kind of faux pas - it's inappropriate or maybe it just leaves users not knowing what to say, perhaps because it's just bad or depressing or responding will encourage the poster to escape into a delusional world of their own from which they will never return and end up institutionalised for the rest of their lives, except that care in the community is now flavour of the month so maybe not.

I imagine this usually happens accidentally, but it could be done deliberately, That's my idea then: when you want to sign off on an idea, post an annotation which nobody knows how to respond to, thereby summoning the tumbleweed.