I have a friend who had a big problem with encroaching on boundaries. She used to “poke” my boyfriend on facebook, whom she had never met or spoken to. She contacted someone else I was casually dating through another social networking site—again, without having ever met or spoken to him. I would define boundaries (in this context) as: the line between appropriate and inappropriate behavior as it pertains to your relationship with another person. Some behaviors are appropriate for one person (e.g., a parent reprimanding you for showing too much cleavage) that would be wildly inappropriate for another person (a stranger on the street delivering the same reprimand). They’re good for keeping people comfortable. I wouldn’t say it’s unilaterally bad when they’re breached, but most of the time, it’s probably more bad than good. I guess I would say for all the rest of your questions, those would have to be answered on a case-by-case basis.