Most charities use contributors' money frugally.
Make a check out to the organization. Don't be pressured to give on the spot. Ask for written materials describing the group's programs and activities, as well as the charity's full name and address. Don't be fooled by names that look impressive or that closely resemble the name of a well-known organization or charity. This may mean that the money left after expenses, such as the cost of fund raising efforts, will go to charity.