Well, Google just launched Knol. A knol is an authoritative article about a specific topic.
Knol is a Google project which includes single author articles on topics ranging from “scientific concepts, to medical information, from geographical and historical, to entertainment, from product information, to how-to-fix-it instructions,” according to Google. It was announced on December 13, 2007, and was opened in beta to the public on July 23, 2008. Knol pages are “meant to be the first thing someone who searches for this topic for the first time will want to read”, according to Udi Manber, a Vice President of Engineering at Google. The term knol, named after a “unit of knowledge”, refers to both the project and an article in the project. Several experts see Knol as Google’s attempt to compete with Wikipedia. (Source: Wikipedia)
In Wikipedia article of Knol, there lacks a criticism section and a popular culture section. But it probably would appear soon.
Take a look at Knol.