A system and method of generating a media item recommendation message used to provide a recommendation for a media item by a recommender to a recipient on a media item recommendation system is disclosed. The media item recommendation is generated by including a media item identifier of a media item in...http://www.google.com/patents/US20080301241?utm_source=gb-gplus-sharePatent US20080301241 - SYSTEM AND METHOD OF GENERATING A MEDIA ITEM RECOMMENDATION MESSAGE WITH RECOMMENDER PRESENCE INFORMATION
