The Pew Internet & American Life Project produces reports exploring the impact of the internet on families, communities, work and home, daily life, education, health care, and civic and political life. They have a page dedicated to reports on Gaming.
(ProQuest) - Provides government statistics, business, trade, and research information, and private and international statistical information. U.S. government statistics go back to 1973 and private and state sources go back to 1980.
(Cornell University) - A search interface to the Roper Center for Public Opinion Research, a non-profit education and research organization that studies politics, government, public institutions, international relations, business, social affairs, and consumer behavior. Includes sources from major broadcasting and news organizations.