Angry Birds maker Rovio's head Peter Vesterbacka stood up on stage in Helsinki last week, and told the assembled crowd that his company wants to eventually have a full billion daily active users. Daily active users, or DAUs, is a measure used in tabulating mobile app success, and it's often a good indicator of just how engaged people are with a given app. Most smaller apps might claim a few hundred daily active users, and a very popular app might claim a few million. But Vesterbacka says Rovio wants a billion.
At that point, you're not talking about an app any more, you're talking about a brand that's competing with some of the most storied and historic brands in the world. "We want to be the first entertainment bra
