CBS: If old-fashioned altruism doesn't get you to donate blood, maybe free coffee will.

At least that's the idea behind the fourth annual "Give a Pint, Get a Pound" campaign put together by Dunkin Donuts and the American Red Cross.

Throughout the month of January - National Blood Donor Month - the campaign entitles blood donors to a coupon that can be redeemed for a pound of coffee at a Dunkin Donuts restaurant.

What's the catch? The campaign is in effect in only seven states: Massachusetts, New Hampshire, Vermont, Connecticut, Maine, Rhode Island, and New York.

Live elsewhere? You're outta luck.

The goal of the campaign isn't to warm up New Englanders during the chilly winter season. It's to help ensure a steady stream of blood at a time when the red stuff is often in short supply.

For the complete story, go to CBSNews.com.

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