A knol on a particular topic is meant to be the first thing someone who searches for this topic for the first time will want to read. The goal is for knols to cover all topics, from scientific concepts, to medical information, from geographical and historical, to entertainment, from product information, to how-to-fix-it instructions… Official Google Blog
From what we know so far, Knol is a wiki-like platform. Authors can create topics, and there are tools to interlink articles and content, but as Manber says, an article, or “knol,” is “just a Web page.” Where it differs from a wiki is its focus on the author. All knols will highlight who wrote them… CNET
Knol, just announced a the official Google blog, is a currently private, invitation-only knowledge sharing service. Google says that a Knol is a unit of knowledge,”* and in the style of the old-school About.com website, experts are invited to the service to write an introductory article on a subject of their expertise. Google wants to provide all the tools to write this, and host the content and so on, so that experts can focus just on the content… SearchNewz
