Why Groupon Revised Its S-1? via TechCrunch | SeekingAlpha 怎么迅速找到几份招股书之间的变更，真是不少人心头之痛...Why TV Companies Couldn’t Care Less About Original Online Video? via TechCrunch 张朝阳那天说了一嘴，在国内做视频网站更像是做HBO，要看看到...