What is Web 2.0?

From Bruce Sterling’s “Viridian Note 00459: Emerging Technology 2006” (The Viridian Design Movement: March 2006):

Here we’ve got the canonical Tim O’Reilly definition of Web 2.0:

“Web 2.0 is the network as platform, spanning all connected devices; Web 2.0 applications are those that make the most of the intrinsic advantages of that platform: delivering software as a continually-updated service that gets better the more people use it, consuming and remixing data from multiple sources, including individual users, while providing their own data and services in a form that allows remixing by others, creating network effects through an ‘architecture of participation,’ and going beyond the page metaphor of Web 1.0 to deliver rich user experiences.”