Google’s Chrome browser and Firefox mess up the display of subject categories somewhat.
- Advertising: 2008 YouTube is "the biggest television station on the planet" -- Forbes.
- Advertising: 2009 CBS Turns Profit with Online Videos of NCAA Tournament. Major US broadcaster-backed online networks claim over half of free online TV in US. Online Video Ad Revenue Up 126% Over 2007. Video Ad Spending Projected at $699 Million for 2009. YouTube Advertising Statistics for May 2009. YouTube's Potential 2009 Ad Revenue.
- Analysis: 2006 Participative Web: User-Created Content.
- Analysis: 2008 Demand for Professionally Produced and Distributed Online Video: Stats One Billion Web-video Viewers by 2013. YouTube Statistics from Mike Wesch's Digital Ethnography 2008.
- Analysis: 2009 Americans Increase Use of Online and Radio News Sources; Daily Newspaper and Television Use Drops. Global Online Landscape - The Nielsen Company. Growth Rate of Online Video: Revised Working Paper Industry Report: Streaming Video 1998-2010 Time Spent Consuming Video is Increasing. Total Global Video Uploading: Statistics. YouTube and TV Viewing Trends. YouTube Should Link to Outside Content: BusinessWeek YouTube's Most Subscribed Channels and Estimated Subscriber Count.
- Bandwidth: 2009 YouTube Uses as Much Bandwidth as the Entire Internet in 2000.
- Blogosphere: 2009 YouTube is the Most Linked-to Site in the Blogosphere
- Canada: 2009 Canada Ranks as a Global Leader in Online Video Viewing. Canadian Internet Users Are World Leaders When it Comes to Watching Video Online.
- Elections: 2008 The Internet and the 2008 Election.
- Europe: 2009 European Internet Consumption to Overtake TV in 2010.
- Forecasts: Global Cisco Visual Networking Index: Forecast and Methodology, 2007–2012. Online Video Traffic Spiked 34% in 2008.
- France: 2009 French Online Video Audience Grows 16 Percent French Online Video Consumption Surges 141 Percent.
- Gender: 2008 His and Her Tubes. Majority of Internet Users are Women.
- Gender: 2009 Nielsen: YouTube is from Mars, Streaming Video is from Venus. Women Watch 41% More Online Videos than 2007.
- Germany: 2008 Online Video Use in Germany: Statistics.
- Germany: 2009 36 Million German Internet Users Viewed More Than 6 Billion Videos Online in August 2009
- Global Internet Use: 2009 27 Billion Hours Were Spent on the Internet Globally in Sept 2009.
- Hulu: 2009 Summary Hulu Stats for 2009
- Japan: 2008 Frequency and Time of Viewing Video with Mobile Phones in Japan.
- Japan: 2009 Japan YouTube Statistics: February 2009.
- Mobile: 2008 Mobile Content Creators.
- Newspapers and Video: 2009 Newspapers are Producing More Video.
- Online News: 2008 World Digital Media Trends Reports Digital Media Growing Fast.
- Online Television: 2009 Apple, Google, Hulu Show Online Video Gains. The PC is becoming the new TV, survey shows.
- Social Networking and Video: 2009 Time Spent Viewing Video on Social Networking Sites Up 98%.
- Socialability: 2009 Study: Internet Use Leads to More Diverse Networks.
- Television: 2009 Average TV Viewing for 2008-09 TV Season at All-Time High. Television and Beyond: A Kid’s Eye View. TV Season Premieres Gains Record Viewing for Online Videos
- U.K.: 2009 'Surge in Demand for Online Video': BBC. U.K. Online Video Audience Grew 10 Percent During 2008
- U.S.: 2007 Online Video.
- U.S.: 2008 American Time Use Survey. Most-viewed U.S. Network Shows Online. Nielsen's Report: Television, Internet and Mobile Usage in the U.S. Three-Quarters of U.S. Online Audience Download Video. Video Consumer Mapping Study.
- U.S.: 2009 167 Million U.S.-based Web Users Watched Video Online During October. 9.6 billion Videos Viewed by 130 Million Americans. AdAge: Morning, Late Night Increasingly Time to Watch Web Video. Americans Viewed a Record 16.8 Billion Videos Online in April Driven Largely by Surge in Viewership at YouTube. Google Sites Surpasses 10 Billion Video Views in August. Media Consumption and Multi-tasking Continue to Increase Across TV, Internet, and Mobile. Music Accounts for Half of Famous YouTubers. Nielsen's Three Screen Report for Q309. Online Video Streams Viewed Up 17% in November '09. Online Video the Fastest-Growing Medium. Online Video vs TV. Only 1 Percent of Adults View TV Shows Online Daily. Professional Content & the Future of Online Video Report: How People Use TV's Web Connections. Time Spent on Video Sites up 2,000% since 2003. Time Spent Viewing Online Video is up 25%. Total Online Video Streams up 41% from Last Year. TV Accounts for 99 Percent of All Video Consumed in 2008. U.S. Internet Users Viewed 13.1 Billion Online Videos in February. U.S. Online Video Market Soars in July. U.S. Videos Viewed Online Surpass 30 Billion. Unique U.S. Video Viewers Total 136 Million in July 2009. Viewing of Online Video Streams Up 26% in October. YouTube Delivers 5.5 billion Video Streams in April. YouTube Grows by 400 Million in One Month
- U.S.: 2010 Americans Watch 33 Billion Videos in December Time Spent Viewing Online Video Up 13% in December
- Video Blogging: 2010 State Of The Vlogosphere 2010.
- YouTube General: 2010 YouTube Growth Chart
The YouTube Bibliography 
For more on the subject of YouTube and online video, download the YouTube Bibliography.
- Click here for a searchable database version of YouTube Bibliography indexed by subject and author with hypertext links to all sources.