Who the heck keeps deleting their posts in here?

I keep seeing deleted posts, to which other users are replying, and I see it a lot more in here than in most other subs;. And it happens on fairly new threads, which tells me the person doing this (I do suspect most of it is one person) is deleting very soon after posting.

It's annoying. Please stop doing that. It's the equivalent of having a cell phone conversation in a restaurant, where all the surrounding tables can hear half the conversation which is at full volume.