Not the same sort of thing as OP's example, but a while ago I found something simple and neat that made me think about code a bit differently. I shared it. Th

Not the same sort of thing as OP's example, but a while ago I found something simple and neat that made me think about code a bit differently. I shared it. The first few comments were negative — not ideal but certainly okay! — but then the author started getting harassed off-site. I was contacted and immediately deleted the post. Start to finish, the whole process took maybe 30 minutes, but it was sadly instructive and I think about it every time I submit something here. It's probably made me comment less.