National Center for Charitable Statistics (NCCS) - National repository of data on the nonprofit sector in the United States. Its mission is to develop and disseminate high quality data on nonprofit organizations and their activities.
Quick Donations - Collection of web sites allowing visitors to make a donation to a variety of causes.
So You Want to Donate to Charity? - This full-length article will take you step-by-step through the process of picking out a charity, giving to it, and getting a tax deduction.
Charity Navigator - Guide to help donors make intelligent charitable giving decisions. Offers financial ratings of thousands of American nonprofit organizations and charities.
BBC Inside Out - Charity Scam - Exposes a company, Nightingale, that claims to collect for charity. The company targets bars and pubs of the south of England.