Online Video

摘要

Viewing of online video more than doubled during 2009: the number of videos watched rose from approximately 15 billion in January to more than 33 billion in December. At the same time, the tail of the phenomenon grew longer. The top 10 video sites accounted for more than 56 percent of online views at the beginning of 2009, but by the end of the year, they accounted for only 52 percent. Smaller news and media sites, social networks, university sites, corporate sites, and, most recently, e-commerce sites have all been supplementing their offerings with video.