Today's Amazon earnings were decidedly split -- the company revealed both a 44-percent increase in net sales and a 73-percent decrease in net income. So, why the discrepancy? It may at least partially be due to the much discussed suggestion that the company actually loses money for each Kindle sold -- a trend which, if true, has likely only been compounded by the release of the uber-cheap ad-supported version of the device. The company addressed the matter in part, suggesting that it is focused on "the lifetime value [of the Kindle], not just the
