I like the way this suggestion approaches it, despite not wanting re-posting of my stuff. Optional to the journal owner on a per-journal or per-entry basis, public entries only, especially if it's opt-in, is kind of my favorite approach.

That said...it runs the risk of option fatigue and being an Often Undiscovered Feature if it's opt-in. But opt-out is not my ideal, so...yeah.

I don't know if it's a good idea, but it's a not-bad-to-me idea.

(If it *was* going to be added, options to share on other media like Twitter might also be something some people would like, but...that complicates it again. I'm not sure it needs complication.)