http://www.marketingexperiments.com/Marketing Experiments. These folks do high quality research to try to determine what really works in marketing. Best of all, they share their findings at no cost. Excellent resource.
http://www.pewinternet.org/trends.aspPew Internet & American Life Project. A non-profit research center studying the social effects of the Internet on Americans. Has some good statistics.
http://www.emarketer.com E-Marketer: Analyses and aggregates eBusiness statistics and Information from over 1,000 research sources worldwide. Daily news bulletin.
http://onlineqda.hud.ac.uk/ Online QDA. An academically-oriented site about qualitative data analysis (QDA). Has a good explanation of what QDA can and cannot do for you.