Biggest "game changers" in next 3-5 years?

The Biggest "game changers" in next 3-5 years, according to professional thinkers:

1. Business Models
   
2. Social Networks
   
3. China and other regions (India)
   
4. Government intervention
   
5. Need for source of authority on the web-remember the famous comic about "On the internet nobody knows you're a dog"