SecondSpin.com

No more need for your 1990s-era CDs? How about your kid’s DVD of “Barney Rocks!” Then sell your CDs, DVDs, and even your videogames to SecondSpin.com, and wait for your check to arrive in the mail. You need the cash, right, because you’ve got a list of things you’d like to buy. And SecondSpin.com will oblige, as the website isn’t just about selling, it’s also about buying; because the site’s got a constant stream of movies and music being added to the mix, you’ll almost certainly find the CDs and DVDs you want, whether that means a Mary J. Blige compilation, a copy of “Spiderman,” or “Guitar Hero III.”