I loved this video.
Gatekeeper blew me away.
Summarized some of the highlights here if you don't have time to watch:
http://agilewarrior.wordpress.com/2011/05/28/how-facebook-pu...
Summarized some of the highlights here if you don't have time to watch:
http://agilewarrior.wordpress.com/2011/05/28/how-facebook-pu...