Fundraisers to Donors: 'Buy4' Me!

Think of it as the charity donation tin next to the cash register. Buy4.com is the tin can's online cousin.

Nonprofits can alert donors that when they shop online at various retailers using Buy4.com, eligible purchases will provide commissions of 1 percent to 30 percent to their favorite charities.

In other words, Buy4.com is taking part of that purchase price out of the register and plunking it into the charity's tin can.