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This little app grabs all the subscribers of the person you enter and also all their subscribers - so it defines your zone as everyone up to two steps away from you. It then simply tabulates how many people are following everyone in the zone and presents the top 100 influencers in that zone and a graph of the top 25. In the list, the name is clickable and will take you to that person's friendfeed profile page. Next to that is a number which shows how many people in the zone are following him. If you are already subscribed to that person you'll see the "sub" text next to the number. And finally there's the "recenter" link which will allow you to view that person's zone.