A recycling group in Tucson called 'Downtown Don't Waste It' has created the Tucson Freecycle Network, an innovative project that harnesses the power of e-mail to connect people with things they want to throw away with others who would like to have those things. That way it doesn't wind up in the garbage. Through a simple Yahoo! Groups e-mail list, any member of the community can post a note about an item they'd like to give away, or an item they are seeking. The only rule: Every item posted must be free. The concept has found an eager audience. Nearly 800 people have joined the list since its inception in mid-March.