This is an upgrade for the Powerful exchange system -> http://codecanyon.net/item/powerful-exchange-system/533068
This upgrade will enable your site to exchange YouTube Video Likes !
This is a must have addon / plugin / upgrade for the Powerful Exchange System !!
This addon works with powerful exchange system v1.x and v2.x
Another most recommended addon for powerful exchange system – http://codecanyon.net/item/anonymous-traffic-exchange-upgrade-for-pes-script/3760918