I think it's only for Launch HN (show HN is a link post, not a text post). It doesn't seem to be for YC only. Here's an example from a non-YC co: https://news.

I think it's only for Launch HN (show HN is a link post, not a text post). It doesn't seem to be for YC only. Here's an example from a non-YC co: https://news.ycombinator.com/item?id=23466470 https://news.ycombinator.com/item?id=23466470