Do kinda wish there was a common way to signify the difference between "I'm posting this and it's okay to riff on it/add your own thoughts (or even I specifically want that)" and "I'm posting this for me, please don't commandeer it for yourself or your own ideas" because I think a lot of posts do fall into one of those categories often and it's really generally not obvious which is which at a glance.
And tbh I think a lot of social media strife happens over people feeling offended that others are responding to/riffing on things they've posted, when they're treating their own timeline like more of a personal journal than a collaborative space.
I'm thinking how there's definitely times when I make a post somewhere and I'm extremely open to other people having ideas jumping off of my ideas. But then I was thinking about how like, if I posted a character idea that I was intending to flesh out later myself, and somebody responded to it by writing a whole story based on their own ideas that I now feel like I have to make space for, it would really complicate what I'm trying to do there. And I just don't know how to make that clear for others (or tell when others are open to/interested in/not open to that kind of riffing) in a way that is brief/concise/widely understood
