If you're doing some spring cleaning and have stuff to get rid of, or if you just moved and need a few secondhand items, check out Freecycle. Freecycle is a worldwide non-profit group that helps to reduce the amount of garbage in landfills and new products bought by providing a forum through which people can post unwanted items, or requests for things. There is only one rule: everything must be free. No bartering, no selling. The Chicago chapter is thriving with over 1800 members exchanging furniture, books, computer equipment, and lots of other odds and ends.