@indie Yes, this definitely sounds right on target to me. I use FB for *very* specific and limited reasons, which essentially translates that to being one separate context (my other contexts--and this is key b/c FB fails--being on OTHER systems).
I wonder whether any social media platform can really deliver on safe and separate contexts, though. There is too much motivation for any platform to start mining their data and therefore slicing any segregated context to ribbons.