Holiday spirit over in Best Buy land must mean “getting rid of old stock by discounting it.” The Droid Incredible and Xperia X10 are among the handsets to be featured in the big retailer’s December mobile sale, which will involve offering up four free phones each day (one for each carrier) at a price of $0 upfront and subject to the usual two-year agreement. LG’s Optimus T and Optimus S will also get their moment in the spotlight this month, though the discount there isn’t exactly massive when you consider that the S started life costing $50 on contract. Speaking of S-branded Android phones, wasn’t it Best Buy that first leaked out the next Nexus? Now that‘d be a holiday offer worth talking about.