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mediatedcultures.net
mediatedcultures.net
It's not necessarily being "vulnerable" rather than being "accountable". We hear stories of trolling and online abuse, but particularly now more than ever, we're accountable to what we say/post/videotape/record, etc on the Web. "Social media" hits this point home.
If you only consider people calling you out legitimately, then accountable is a good word.
But if you consider that there are people who don't play fair or hold themselves to even a basic set of morals that you agree with, and you've personally seen enough to know that genuine high-stakes situations do not only occur in movies, then I think 'vulnerability' also applies.