Here is a new report from Pew Internet:
A national phone survey of bloggers finds that most are focused on describing their personal experiences to a relatively small audience of readers and that only a small proportion focus their coverage on politics, media, government, or technology. Blogs, the survey finds, are as individual as the people who keep them. However, most bloggers are primarily interested in creative, personal expression – documenting individual experiences, sharing practical knowledge, or just keeping in touch with friends and family.
Pew Internet Mission:
The Pew Internet & American Life Project produces reports that explore the impact of the Internet on families, communities, work and home, daily life, education, health care, and civic and political life. The Project aims to be an authoritative source on the evolution of the Internet through collection of data and analysis of real-world developments as they affect the virtual world. The basis of the reports are nationwide random digit dial telephone surveys as well as online surveys. This data collection is supplemented with research from government agencies, academia, and other expert venues; observations of what people do and how they behave when they are online; in-depth interviews with Internet users and Internet experts alike; and other efforts that try to examine individual and group behavior. The Project releases 15-20 pieces of research a year, varying in size, scope, and ambition.