In addition to have the most delegates, winning the most states, etc. etc. Neilsen Online reports that Barack Obama’s Web site also had the most unique viewers of video content in March.

Web Site Unique
Viewers (000)
Total Video
Streams (000)
Time Spent
per Viewer
Barack Obama 518 828 16 min
Hillary For President 351 551 4.8 min 38 66 1.5 min

Also kind of interesting is that viewers seem to be loyal to a specific candidate’s site:

Only one percent of viewers watched video content on both Barack Obama’s and Hillary Clinton’s Web sites in March. Across all candidate sites, including John McCain’s, there was virtually no overlap. The findings suggest that campaign Web site videos are attracting loyal viewers who are not necessarily researching all three candidates.