It's not going to warrant you any rags-to-riches accolades overnight, but it's a quick way to get rid of unwanted gadgetry and make a few bucks in the process.
You can make more money selling it on eBay proper, to real buyers, but for those other gadgets that no-one really wants, eBay is willing to trade with you for a small amount of cash—and pay for your shipping charges, too. If their database shows your product as having no secondhand resale value whatsoever, then they'll take it off your hands and still pay shipping. The alternative is to just let them rot in your bottom draw, much like most of my old handsets. [eBay via UberGizmo]