May be my phone is old/doesn't support the feature if they exist. A phone has a storage capacity of upto 500 contacts,clients sometimes save numbers under name X and eventually forget who the person is.Most people end up saving numbers as...X-Fundi,John-Driver,Joel-(person who connected you to him),for easy reference so that you don't end up deleting important contacts. Is there a phone that has ability to save contacts and maybe create/show mutual frnd.or at least how the contact ended up in your phone ie.the way access shows tables relationship.Is it possible to develop something of the sort so that one can create contacts relationship on the phone.... Just a thought.