Like Brinn, I only post 'full-blown' details on Facebook - but even then, with the exception of my surname and school, they're only visible to my friends. Simple way of keeping that safe: only add people you know. (Or...semi-know - Brinniel...)
It's the same on any forum - but then, if you send a message from a personal email to account to any barrowdowner, chances are they could then have your surname. You do have to be really careful, especially if you're under 18 - Balin's "knife in hand" example, whilst a comical image ("Ah ha! You would be the axe-murderer I ordered? Well, splendid, splendid, do come in and have a cup of tea, then we can get started...") is a good point.
Oh, and not to sound patronising now I've finally crossed the invisible line into 'adulthood' *sheepish grin*
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I am what I was, a harmless little devil
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