Most people have at least one old cell phones lying around they have been meaning to recycle "someday." In the US alone, there are an estimated 500 million unused cell phones, and, one in three Americans will replace their phones this year. If you finally do something with that phone, you could actually be benefiting soldiers in Iraq.
Cell Phones for Soldiers takes your cast offs and sells them and converts the money to phone cards. The postage is paid, all you have to do is box it up. If you prefer to bring the old phone in person, there are drop points set up at across the country, including AT&T stores.
They accept all makes, models and conditions, so even if you've got an enormous retro phone, they'll take it. In addition to phones, they also accept accessories like chargers and batteries as well as taking in Blackberry PDAs and pagers.
The important of recycling phones has been brought to our attention before, ReCellular also gives proceeds to those in need:
Recycled Phones For a Cause
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High-Fashion Recycled Lamps
Transparent Sole Business Shoes
Brand-Promoting Maple Syrups
Socially-Connected Security Trackers
Streamlined Staffing Apps