YouTube has reached an historic milestone, according to TV Week:

For the first time, YouTube has surpassed 100 million U.S. monthly viewers, according to new comScore information.

The Web video giant logged 100.9 million U.S. viewers during the month of January. Viewers averaged 62.6 clips each, bringing the site’s total to 6.3 billion video streams for the month among U.S. Internet users.

One reason? Videos like this:

https://youtube.com/watch?v=HlWxCs9a7Us%26hl%3Den%26fs%3D1

This article appears in Mar 4-10, 2009.