I have two quibbles with their numbers. First, if WalMart gives 1% of revenues, and they have $400 billion in revenues, they give $4 billion to charity. They sa

I have two quibbles with their numbers. First, if WalMart gives 1% of revenues, and they have $400 billion in revenues, they give $4 billion to charity. They say $13 billion is given to charity by corporations. Note that U.S. GDP is $14 trillion (http://en.wikipedia.org/wiki/Economy_of_the_United_States http://en.wikipedia.org/wiki/Economy_of_the_United_States), so WalMart takes in under 3% of that. It seems off that 30% of all charitable giving by corporations is high for one organization. Also, it says that public charities "collect a total of " more than $1.4 trillion. But we only give $300 billion to charity. Where does the other $1.1 trillion come from?