I wonder if the economists in the government are taking freecycle into account? Freecycle, for those who don't know, is a no-cost classified ad concept implemented in Yahoo groups. For example, I'm in the Reston/Herndon freecycle group, so I get an e-mail digest containing "Offers" and "Wanted" postings. The Offers are of things still possibly usable but unwanted. For example, I just posted a series of offers, including an old (14 year old) PC and some homemade furniture. To my surprise, I've some interest from people.
Economically, the point is that freecycle (and craigslist.com, which operates slightly differently) lubricates the reallocation of assets, of "productive" stuff. By extending the useful life of products, it increases their value without requiring resources to produce. It's one of the rare instances where you can get something for nothing, or nearly nothing (since you do invest the time needed to coordinate the pickup).