I recently wrote about the online bartering trend. Now there's a site getting tons of hits, Free Napkin, that is a similar idea to online bartering sites in terms of creating a profile, leaving feedback, etc, just without the actual trade--you just give some stuff away for free. Here's an example from the site's FAQ:
Registered freenapkin user Bob has a father who owns a farm. His dads farm has a lot of old equipment. Much of the equipment is old and non-functional and takes up a lot of space. Bobs dad is old and he himself does not have enough money to hire movers to come haul away some of the big equipment. He decides its better and more lucrative if he registers a free account on freenapkin so that his father can get rid of his equipment that he needs at will. His 80 yr old father was able to take a photo of his farming equipment and then with no help at all upload the photos onto his freenapkin account. The items were claimed within a few days. See how simple and easy a freenapkin account is. Senior citizens might not be able to help lift heavy objects but they can take a picture.
I haven't been able to find many testimonials from people about how they have liked using this site. But assuming it's legit, the idea is a bit strange. People who want to donate items for humanitarian purposes would probably prefer to do so at a place like Goodwill or Salvation Army where they know their donation is going to support the needy--not just someone who wants free stuff. For people looking to unload unwanted items, Craigslist (or any of the online bartering sites) seem just as easy to use, but with the added bonus of getting something in return.