Tim O'Reilly attempts to clarify just what is meant by Web 2.0, the term first coined at a conference brainstorming session between O'Reilly Media and MediaLive International, which also spawned the Web 2.0 Conference.
Spark looks at the top 10 "Web moments" since the World Wide Web was born 15 years ago, and asks viewers to vote for the one they think had the most impact in the Web's history.