Making a website teenager-friendly means:
Keeping the UI clean (a factor common to all ages)
Favoring graphical content to textual content (teens tend to read less online)
Using animation and sound (moderately, though — not as much as for young children)
Ensuring that the content isn’t so simplistic that it appears childish
Good statistics, not very inspiring though
This is such a well edited film, amazing how it keeps your full attention for nearly two hours on a set of impeccably edited interviews. Makes an otherwise rather mundane story a powerful one, a good example of the importance of good storytelling