Groupon Green? How Sustainable Businesses Are Using Daily Deals

With millions of emails showcasing new products, daily deals could be a boon for green business. But it's not shaping up that way ... yet.

Kevin Williams’ eco-friendly car service company, Seattle Green Limo, is a bit tricky to explain. Despite the name, his company doesn’t actually offer limos—because “there are no green stretch limos,” Williams says.

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