There is a Japanese proverb: “None of us are as smart as all of us”. In 2004, Tim O’Reilly and MediaLive International coined the term “Web 2.0”, when they chose it as the name for a conference focused on participative web technologies.

Wikipedia, considered by many an exemplary Web 2.0 application, defines Web 2.0 as “a second generation of services available on the World Wide Web that lets people collaborate and share information online. Web 2.0 refers to a diverse set of technologies and approaches designed to capture our collective intelligence through online, two-way dialogue.