Google I/O 2010 - App Engine http://www.youtube.com/view_play_list?p=FBF991DAE0E02FED xhr2-steaming http://www.slideshare.net/KensakuKOMATSU/xhr2-steaming-twitter-with-ipad phvsicSketch http://physicsketch.appspot.com/ Canvasでピクセル操作…