Donate back your fees
Here’s an idea for Visa, MasterCard, Amex, and other companies that charge merchants a percentage of gross charges–donate back the fees for money given to the the Red Cross (and others) for tsunami aid. Make it known that a $100 online donation will end up being $100, not $97. With all the millions being collected online, this could be a large donation.
Who really wants to profit off this disaster anyway?