And it's working — no one's abusing the system. We're clearing our clutter and sharing the wealth. I recently purged my kitchen drawers of all duplicate gadgets and now someone in the building is the new owner of my colander, veggie peeler and cheese grater. I must have created some good trade karma, because a week later, I was running out to buy an extension cord and lo and behold, there was a perfectly coiled 10-footer just waiting for me!
So far, it seems to be a perfect system. I've always operated under the notion that if my donated items are still hanging around after a day or so, I'll drop them at Goodwill, but it's never happened! There seems to be quite a brisk market around here for hand-me-downs, and I'm happy to oblige.
I'm curious, does your building have a swap area? Would you participate?