Madonna's woes highlight pitfalls for celebrity do-gooders

Pop star philanthropist Madonna's plans to help poor kids in Malawi hit a snag when she abandoned a school project after millions in funds were embezzled. The Material Girl also rebutted reports her charity was the subject of an FBI probe. George Clooney and Oprah Winfrey have also learned the hard way that charitable work is not as simple as just handing out cash.