I need to add links to the bottom of an YouTube video, like this Ben Stiller video here: http://www.youtube.com/watch?v=uDN08JwNEfc
Here is a video of a guy teaching how to add little baloons to an YouTube video: http://www.youtube.com/watch?v=u5otjHuOkVM. But he also says you cannot link outside of YouTube. The links created with this tool can only lead users to other YouTube videos.
Question: how can I add functionality similar to Ben Stiller's videos with links that lead users outside YouTube to something like a donation website?