Top Swaps: The Year’s Most Popularly Traded DVDs, CDs, Books, and Video Games

In a year when a barter economy got new life, when consumers became more comfortable trading services or goods for everything from health care to a new wardrobe, some items switched hands a lot more than others. Among the most popular goods to swap were “The Dark Knight” on DVD, Taylor Swift CDs, Wii Fit, and books from the Twilight series.