This is quite fascinating to say the least.
In my one community I had the fields that are for adding fields made private that they can not be seen by others and used them to put the persons REAL NAME, TOWN - CITY, State - Provence, and Country.
Many of the users complained it is a privacy issue to have that information in my database that can not be seen by anyone other then me but those same users would then later advertise their real name and stuff for these online communities you all are talking about. Go figure.
