In this morning's WSJ there was a great article about how Amazon (AMZN) is in talks to join the digital locker consortium called Ultraviolet. Think of it as a shelf in the cloud that houses your digital movies and TV shows. Instead of buying a digital video on Amazon and only being able to watch it on Amazon Instant Video or buying a digital TV show from Walmart (WMT) and only being able to watch it on their Vudu service, you can buy from any of these sources, store it in your digital locker and then watch whenever you want! Watch out Apple (AAPL) and Microsoft (MSFT), AMZN is coming for you! They want a bigger chunk of the $2B+ digital video market.