Here is another way to cut down your Christmas expenses and save big this holiday season:
Boston GlobeNot sure what to do with that gift card? Now, you can sell itBoston GlobeShortly before Christmas, Walmart partnered with a secondhand gift card website to give people digital Walmart gift certificates worth up to 97 percent of gift cards from some 200 other stores. The company wouldn't say how many people took advantage of …