I share a lot about my kids and their personal lives. And I feel no guilt for doing it. Here's a good illustration outlining why I feel no remorse for my actions:
Number One Son hears the familiar beep of a cell phone receiving a text message. He is surprised to realize that the beep came from my phone, not his.
He calls to me from the kitchen, "Are you texting now, Mom?"
I am indignant. "You ask that as though the idea of me texting is a ludicrous!"
I can feel the rub in his voice, "Yeah, well, old people don't text."
He's fair game : )