I haven’t seen any previous discussion about this. I think the main relevant difference for me is that it’s much easier to find someone’s ShortForm posts than their Open Thread posts (which are hidden among all of their other comments). I don’t really see the point of ShortForm posts compared to regular posts, so I basically post in Open Thread if I don’t want something to be part of my “permanent record” (e.g., posting a rough idea or a draft for feedback), and make a regular post otherwise.
I haven’t seen any previous discussion about this. I think the main relevant difference for me is that it’s much easier to find someone’s ShortForm posts than their Open Thread posts (which are hidden among all of their other comments). I don’t really see the point of ShortForm posts compared to regular posts, so I basically post in Open Thread if I don’t want something to be part of my “permanent record” (e.g., posting a rough idea or a draft for feedback), and make a regular post otherwise.