With over a million charities in the United States alone, figuring out where to direct your money can be an overwhelming decision. How will your donation line up with your values and goals? How will it change the world? They're big questions, but we've got answers from Katherina Rosqueta, executive director of the Center for High Impact Philanthropy. In Mailbag, questions on car deals, 401(k) rollovers, stock options for kids, and year-end tax planning.

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