I knew a woman who had (and probably still has for all I know) an unfortunate habit of disclosing too much information once in a while.
And so it was while I was eating my lunch with some cohorts that she says "ooh its all itchy down there, I haven't shaved it for days". After some choking, my reaction was something along the lines of dude, this is wayyyy-yyyyyy too much information. Your colleagues stubbly lady garden is not what you want to think about at any time, let alone with a mouth full of sandwich.
And yet there are many who are comfortable sharing similar things even with transitory friends like I was especially online. The Please Rob Me site was a cleaver attention grabbing idea highlighting the dangers of over-sharing which some should pay heed.
Sometimes, something's are better left unsaid or to the imagination.