Facebook friends and contact imports for a Deals website

This task is to add functionality to the Affiliation feature in a Group Buying website. I would like to have a feature where the subscriber can extract and import friend's emails from his facebook account and/or from his Yahoo/Gmail/MSN accounts. The imported emails will be stored and a simple report will sort the "leaderboard" subscriber who added most friends and contacts. Then an email will be sent to his friends with his affiliate link. This emailing part is already supported by the script. You will only need to pass the contacts list to the script email engine. Please see attached screen shot.