comScore released its Video Metrix report for May 2007, revealing that nearly 75 percent of U.S. Internet users watched an average of 158 minutes of online video per user during the month. Google Sites topped the monthly rankings with both the most unique video streamers and most videos streamed.

Google Tops U.S. Online Video Rankings

May saw Americans view more than 8.3 billion video streams online, and Google Sites once again ranked as the top U.S. streaming video property with 1.8 billion videos streamed (21.5 percent share of streams), 1.7 billion of which occurred at YouTube.com. Fox Interactive Media ranked second with 680 million streams (8.1 percent), followed by Yahoo! Sites with 387 million (4.6 percent) and Viacom Digital with 237 million (2.8 percent).

Top U.S. Online Streaming Video Properties* by Video Streams
  May 2007
  Source: comScore Video Metrix

  Property                Video Streams          Share (%) of
                               (MM)              Video Streams
  Total Internet             8,357                  100.0%
  Google Sites               1,796                   21.5%
  Fox Interactive Media        680                    8.1%
  Yahoo! Sites                 387                    4.6%
  Viacom Digital               237                    2.8%
  Time Warner Network          185                    2.2%
  Microsoft Sites              171                    2.0%
  ABC.com                      100                    1.2%
  Disney Online                 84                    1.0%
  ESPN                          62                    0.7%
  NBC Universal                 58                    0.7%
  *Rankings based on video content sites; excludes video server networks

In total, nearly 132 million Americans viewed online streaming video in May. Google Sites also captured the largest streaming video audience with more than 64.9 million unique streamers, followed by Fox Interactive Media with 52.7 million and Yahoo! Sites with 35.0 million.

Top U.S. Online Streaming Video Properties* by Video Streamers
  May 2007
  Source: comScore Video Metrix

  Property                 Unique Video           Video Streamer
                           Streamers (000)        Penetration (%)
  Total Internet             131,915                 100.0%
  Google Sites                64,945                  49.2%
  Fox Interactive Media       52,737                  40.0%
  Yahoo! Sites                35,024                  26.6%
  Time Warner Network         29,479                  22.3%
  Microsoft Sites             24,394                  18.5%
  Viacom Digital              19,356                  14.7%
  Verizon Communications      15,030                  11.4%
  Corporation
  ABC.COM                     10,799                   8.2%
  Disney Online               10,114                   7.7%
  MLB.COM                      7,311                   5.5%
  *Rankings based on video content sites; excludes video server networks

Other notable findings from May 2007 include:

• Online viewers watched an average of 158 minutes of streaming video per streamer.
• The average video stream duration was 2.5 minutes.
• Nearly three out of four (74.3 percent) U.S. Internet users streamed video online.
• More than one out of three (35 percent) U.S. Internet users streamed video on YouTube.com.
• The average online video viewer consumed 63 video streams, or more than two per day.