Rovio's Peter Vesterbacka was pretty outgoing at GDC a few weeks ago, claiming that "it all works" when it comes to ad-driven business models on the App Store. But he might be relearning that lesson the hard way right now -- after an update to Angry Birds HD on the iPad added a "News" section in the replay screen that advertises other Angry Birds products, some users have gotten their feathers ruffled. That "News" section takes a while to load, and it must come up every time a level needs to be restarted, which means some players have raised their voices and voting fingers on
