I know what of the elements of multitasking is task completion in the background even when you close the app. I haven't really been experiencing apps that capitalize on this... It seems like if I try to refresh/update many of my apps (like pageonce, pulse news, twitter) and then exit. Wait a minute or so and re-enter the apps the update picks up right where it left off instead of being fulled loaded as it should be if it were updating in the background. I'm not sure if this isn't how the API works, or maybe there's a reason many apps don't use it, or something. Whatever the reason, it goes to show that while Apple's "multitasking" solution may help battery life, there are still a lot of flaws in it's implementation.