While the term Web 2.0 seems dated, many of its guiding principles are more important today than they were in 2005. Others have virtually disappeared. Web 2.0 celebrated developments like open-source software and "interoperability," the ability to port data from one site to another. These ideals seem quaint in the context of closed networks like Facebook, proprietary formats like the Apple App Store, and highly regulated environments like mobile carriers. Even sites like Twitter, which once encouraged third-party development, now limit access to their data. But entrepreneurship, along with self-presentation techniques like micro-celebrity, self-quantification, and self-promotion, are more salient today than they were in the mid-2000s.

Alice E. Marwick, Status Update, loc. 23