That helps explain why Earth Day has become so big again, why products are all going “green” and why freecycle.org, an Internet community bulletin board where members offer items for free, has grown in five years from a dozen members in Tucson, Ariz., to a network of over 3,000 cities in 80 countries.

Deron Beal, the site’s founder, counts 4 million members, and growing by 20,000 to 50,000 members each week.

“People have many reasons for freecycling,” said Beal. “But the biggest reason is environmental — reusing and recycling instead of helping create more waste.”

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