Speaking as a parent the real problem with revealing who you are is you never know who read your posts. Not every CR reader is a member, and this sort of info can be manipulated and put you at risk of something very evil. Sorry to sound dramatic, but that’s the cold reality of the world on-line.
As a frum person, the need to keep our real-world distance from the other CR members is simply becuase we are of both genders, and mixing the two in the real world has some very negative side effects.
All in all, its best we keep our true indentities and real-world whereabouts as vauge as possible. Friend a total stranger to your Facebook? No, I think not.