Got a garage full of stuff you don't need? Try posting it on Freecycle. No Freecycle group in your area? Start your own. A new deal has some Freecyclers down in the dumps. This has been the happy mantra of Freecyclers since the grassroots online exchange started up in 2003. More than a million people all over the world have become members, via some 2,600 local groups. Thousands of tons of useful goods have been kept out of the garbage. The media has been charmed. But behind the scenes at the Freecycle Network, as it's formally known, the honeymoon may …