These days, a lot of videos have appeared on the Internet in which the new functions of Mac OS X Lion are presented, and those from Apple seem to be disturbed by this, so they requested the deletion of the respective clips from the YouTube website. Some of the respective materials will display the message above if you try to view them, others are still available but will probably be deleted soon. It's hard to understand why Apple uses such tactics considering that competing companies can purchase a developer account and have access to the entire operating system.
Maybe Apple wants to keep certain functions secret from users who don't have dev accounts, or maybe Apple doesn't want to "spoil the surprise" for those who aren't really that interested in the new Lion. It matters little the reasons why these videos were deleted, the important thing is that they can no longer be viewed by anyone.
