What is Web 2.0? - Pictorial Explanation of Web 2.0

Nowadays, we often talk about Web 2.0. So, what is Web 2.0? How is it different from Web 1.0? In fact, there is no precise definition of Web 2.0, but compared to Web 1.0, it has distinct characteristics: everyone is both a producer and consumer of content, there's a high degree of freedom in personalizing information, the web technologies are different, and the long-tail effect is more pronounced. If you search for "Web 2.0" on Google or Baidu, you'll find some detailed explanations of Web 2.0. Instead of reading these explanations, why not "identify characters through pictures"? This article explains what Web 2.0 is using images as a starting point.