Bizlink: Company and business research, marketing and demographics, MANY business links!
Hoovers Online: Find 10,000-plus free company capsules that include short company profiles, address, phone, and Web contact information, annual reports, federal filings, current news stories and links to job openings!
MONEY Magazine
The Dismal Scientist: A site with comprehensive and timely economic information-- "data and analysis at the metro, state, and national level by recognized economists."