Just to play devil's advocate here, this is from the article: > The app, called WorkIt, invites users to register by providing a name, email, telephone number and ZIP Code. Users can also s hare (sic) their job title and Wal-Mart store number.... That is a bunch of personally identifying information. You can easily steal somebody's identity with those bits of information, or at least have a good idea of who they are.…
All of this information is probably readily available on these users' facebook profiles.
I don't know which profiles you're looking at, but that information is available on the profiles of none of my friends.