●＜ソーシャルテレビ＞　USTREAMの2009年トップ10ビデオは凄い参加者数

　凄いですね。なんと言っても凄いのはマイケルジャクソンの葬儀の参加者数が4.6百万人と言う数字でしょう。同時視聴の数とは思えませんが。

現在、4千5百万人が月次の平均ユニーク参加者と考えられています。

1. 　Michael Jackson's Memorial Service (7/7) - 4.6 million streams 2. Twilight: New Moon Premiere (11/16) - 4.1 million 3. Obama's Inauguration (1/20) - 3.8 million 4. American Music Awards Preshow (11/22) - 3.4 million 5. KISS Concert (11/25) - 2 million 6. Michael Jackson's This Is It Premiere (10/27) - 1.8 million 7. Bill Cosby Live Chat (10/19) - 1.3 million 8. Jonas Brothers Live Chat (8/22) - 635,000 9. Ashley Tisdale (7/30) - 570,000 10. Selena Gomez (9/23) - 406,000

＜引用元：下記ファーストカンパニーサイト＞
★★Ustream's Top 10 Videos of 2009: "Twilight," KISS, Michael Jackson [Exclusive]
http://www.fastcompany.com/blog/dan-macsai/popwise/exclusive-ustream-owes-michael-jackson-twilight-phenomenal-popularity

On YouTube, the most viral videos showcase quick, one-off events: a baby biting a finger, a dowdly singer wowing a panel of judges, a man doing the Robot (and the Macarena, and the Twist, and the Moonwalk). What's missing, says John Ham, founder and CEO of video-broadcasting site Ustream, is "a feeling of immediacy."
No more. Using Ustream's "Social Stream" feature, which launched in October, viewers can simultaneously sign into Facebook, MySpace, Twitter, and AIM, and broadcast their video comments as status updates, growing the site's audience exponentially. Right now, it's averaging 45 million uniques a month.

　日本ナレッジマネジメント学会　専務理事　山崎秀夫