Economics Roundtable: Aggregates economic blogs
Economist's View by Mark Thoma, a macroeconomist at the University of Oregon. A one-stop shop.
Greg Mankiw's Blog - Harvard economist and former George W. Bush policy advisor
Why Nation's Fail - The origins of Power, Prosperity, and Poverty
EconBrowser - Analyis of current economic conditions and policy
Roper Center for Public Opinion Research
Located at Cornell University, the Roper Center is one of the world’s leading archives of social science data, specializing in data from public opinion surveys. The Center’s mission is to collect, preserve, and disseminate public opinion data; to serve as a resource to help improve the practice of survey research; and to broaden the understanding of public opinion through the use of survey data in the United States and abroad. Collection contains data from the 1930s to the present and includes more than 22,000 datasets.