But what if I'm having a quiet conversation over coffee with a colleague in Starbucks (lambasting our boss), intended for our ears only, because inviting said (

But what if I'm having a quiet conversation over coffee with a colleague in Starbucks (lambasting our boss), intended for our ears only, because inviting said (perhaps opposite sex) colleague to my house would be odd/creepy (or it's lunchtime)? What if the person on the table next to us can just about make out our conversation and decides it's interesting/humorous enough to tweet? Perhaps we don't want to meet in the middle of a park or a deserted bridge - we want a coffee and it's cold. We're expecting some level of privacy and we're not broadcasting - we're just unfortunately seated. I'm all for discretion and appropriate behaviour in public, but just because you can hear something doesn't mean you should tell the world about it. Have some decency! (I'm not referring to you personally!)