That said, I tend to cross-publish most events to public relays. If I want a wider audience to read something, I put it in a place where they can read it and respond.

@cloud fodder is working on a way for us to be able to write everything to theforest and then categorize it public/private by kind or tag or whatnot, to determine if it will be auto-broadcasted to "public" relays. 

 "Public" in the sense that they don't require AUTH to read, but they're usually write-limited.