Cool idea. Time to guess on how the app will work:

-> Download the app.

-> Log in to one or more social networks, or create a contact-profile. Allow anyone who is your friend on a social network or already has your contact to stay up-to-date on changes to your contact information.

-> Check to see if existing contacts also have the app, and if so, then the two can now stay in sync forever! =)

-> Added bonus feature - all phone numbers will be stored with correct international extensions for easy international dialing.