Keurig's coffee machines have done great business for its owner Green Mountain Coffee. Making coffee in combination with pretty expensive capsules has made a lot of money for the company, but its latest 2.0 machines have left (excuse me) a bitter taste in the mouths of customers, as Keurig has seen, missing sales and earnings targets in its latest financial report. It cited poor machine sales during the typically lucrative holiday season -- the first quarter that the new Keurigs went on sale. The main issue with the new machines, which can now make coffee both by the cup and in larger quantities, is the DRM-style lockdown on the pods it takes. The popularity of the Keurig machines led to no shortage of cheaper third-party pods, but in an effort to reclaim the lucrative cash cow that was its own coffee pods, the company's second-generation machines packed cameras that detected special ink found only on official Keurig pods. Every other kind of pod simply didn't work.