SwipeGood-doing good deeds with your credit card

How many of us use a credit card?  Too many to count, right?  Well, now you can do even more good with it.  You've got it signed up with eScrip, you're giving money away with Members Project, now you can round up your purchase amount and do even more.  SwipeGood lets people donate to nonprofit organizations by giving their change.  Make a $5.37 purchase at your favorite location and it gets rounded to $6.00.  Of that amount, $0.63 goes to your favorite charity.