With spring right around the corner, there's no shame in getting a leg up on your seasonal cleaning--which, in New York, means purging your apartment of all the stuff you've stopped using (sorry, Thigh Master).
Our newest method for selling stuff we don't need: Amazon's supersmart fulfillment program, which is a faster and easier alternative to eBay or Craigslist.
In a nutshell, you send your items to the folks at Amazon. They list, store, sell and mail these items to buyers. They take a small cut. You keep the rest of the profit.
To get started, you'll need to create an Amazon seller profile and then list and price all the things you're looking to unload. (Amazon lets you sell almost anything, but it's easiest if it's a product already offered on the site.) Next, Amazon will calculate your shipping rate and generate a printable mailing label. Fill a box with your stuff, slap on the label and send it to Amazon, which will arrange the rest.
Because Amazon charges one or two dollars (plus shipping) for every listing, we suggest limiting your offerings to things worth five bucks or more. The real crap is probably best left for the stoop sale.