The National Charities Information Bureau offers a "wise giving guide," a quick reference list of groups that meet certain standards and a weekly charity report.
Center on Philanthropy
Resources from Indiana University.
National Fraud Information Center
Established by the National Consumers League.
Hunger in America 2001
Claims to be the most comprehensive study of domestic hunger ever.
An online newspaper for non-profit organizations. Some helpful research and databases. A must-read for reporters covering charities.
Look up budget analysis on non-profit organizations.
National Charities Information Bureau
A good site for tracking spending and income from charities.
IRS: Non-Profits Tax Information
General site for non-profit statistics.
IRS: More on Non-Profits Tax Information
Files for each U.S. state listing the non-profits the IRS is aware of.
Maryland Comptroller's Office
The Maryland Comptroller's office has a database of unresolved tax liabilities. Great for tracking promising business types and politicians. Several other states have similar databases, including Illinois.