If you're looking to both freshen up your DVD collection and weed it out, check out SwapaDVD.  It's from the same people who run PaperbackSwap. Here's how it works: you post DVDs from your collection that you no longer want. Another member can then ask you to ship them the DVD. You pay the shipping.  Then you get a credit and can pick out a DVD from someone else's collection. In that case, they pay the shipping.  You get one gift credit for posting your first 10 DVDs.  Happy swapping!