This is a short 14 min documentary about Web 3.0 by Kate Ray that is well worth your time.
The main issue here is:
What is the best way to filter and organize the explosive growth of the internet information in the fastest and most efficient manner possible?
Another way of asking the same question is:
How do we bridge the gap between the enormous amount of digital information out there and our human brain in here?
Is the semantic web the answer? Or do we have to come up with something better?
You can find the full movie transcript here.