It is easier to remember the person when you can connect the name with a face. And you can discover the attractive face of a colleague which you might have otherwise missed.

Of course the main purpose of the module is to provide means to contact your peers.

It has nothing to do with Facebook or Twitter. People simply tell some facts about themselves (like hobbies, music/movies preferences, sport activities, etc.) to provoke informal discussions during lunch breaks or cooperatively share their cars when driving from the same area.