The first time I ever stumbled across Craig's List -- this has got to be more than a year ago -- I saw, to my amazement, a "Missed Connection" that was not of the "standing next to you on subway platform" type, but the "looking for old friend I lost touch with" type, directed to the realworld ID of a prostitute I had known. You could tell it was her, not just by the name, but by what he said about her (again, relating to her real world, not working girl, identity). It was wierd.