Ricardo Sato

Building

http://www.slideshare.net/cyrildoussin/custom-yui-widgets

http://www.slideshare.net/skeevis/facebook-for-widget-developers

http://www.slideshare.net/mcaceres/widgets-125319

Theory

http://www.slideshare.net/MicrolearningOrg/mobile-web-20-mobile-widgets-microlearning-and-intertwingularity

http://www.slideshare.net/mcaceres/w3c-xbl-20-and-widgets-10-155923

http://www.slideshare.net/silvertje/the-widgetized-self-in-the-blogosphere/