Ooh, since this I've had another thought - instead of open/closed networks, 'just' have a third option for how to share a notification - "my approved list" or "people who follow me and I follow back" or something along those lines, just less awkward wording.
Might be easier said than done as well. :D please shoot me down as necessary :)
Might be easier said than done as well. :D please shoot me down as necessary :)