An interesting announcement today from Walmart’s Vudu, the digital movie and TV rental service that’s similar to Apple’s iTunes. It has begun to let customers offer access to the UltraViolet-enabled content in their libraries to as many as five people. Invitees in the “Share My Movies by Vudu” initiative have to create an account with Vudu, which is free, or link the Walmart service to their existing UltraViolet digital lockers. Then they get to see or download whatever’s in the inviter’s library — including select DVDs added via Vudu’s Disc to Digital service. “We know you’ve spent a significant amount of money and time building your collection and have plenty more films to add to it,” Vudu Senior Director Amit Balan says in a blog post. “Share My Movies by Vudu is another way we’re helping you get the most out of your collection.” Remember that Disney isn’t a member of UltraViolet — it has its own digital locker service called Disney Movies Everywhere. So its content is out. At the end of 2013 UltraViolet had more than 15M consumer accounts that could access 12,200 movies and TV shows from 10 major content providers.