>><i>Content lock-in is what every company wants to get, as it makes it difficult or prohibitively expensive for customers to take their business elsewhere. The new apps and document revamp in OS X and iOS 5 takes this lock-in to a new level, by doing away with a traditional filesystem and replacing it with documents that just exist on every Apple system. This is the ultimate lock-in, and it crosses laptops, phones and tablets. It is a brilliant move by Apple for the long term.</i><p>Interesting, so it's like a private filesystem on the cloud.