Know Knol -from Google's stable

Time for another web tool from Google - Knol ! Already there are few hundred knols available.
Google has once again improvised on the existing Wiki model and blogging to come up with KNOwLedge share ? Is Knol derived from Know(ledge)? Or is there a meaning to it? Is it a fictional character? Could not find it in English directory as well ... Let me know the meaning/ other reasoning behind Knol, if u know!
Here is an excerpt on Knol from Economic Times.
Google Inc opened its website Knol to the public on Wednesday, allowing people to write about their areas of expertise under their bylines in a twist on encyclopedia Wikipedia, which allows anonymity.
The name of the service is a play on an individual unit of knowledge, DuPont said, and entries on the public website, http://knol.google.com, are called "knols". Google conducted a limited test of the site beginning in December. Knol has publishing tools similar to single blog pages.
But unlike blogs, Knol encourages writers to reduce what they know about a topic to a single page that is not chronologically updated. "What we want to get away from is 'this last voice wins' model which is very difficult if you are a busy professional," DuPont said.
Google wants to rank entries by popularity to encourage competition. For example, the first knol on "Type 1 Diabetes" is by Anne Peters, director of the University of Southern California's Clinical Diabetes Programs. As other writers publish on diabetes, Google plans to rank related pages according to user ratings, reviews and how often people refer to specific pages, DuPont said.
Knol focuses on individual authors or groups of authors in contrast to Wikipedia's subject entries, which are updated by users and edited behind the scenes. Knol does not edit or endorse the information and visitors will not be able to edit or contribute to a knol unless they have the author's permission. Readers will be able to notify Google if they find any content objectionable.
Knol is a hybrid of the individual, often opinionated entries found in blogs and the collective editing relied on by Wikipedia and other wiki sites. The service uses what it calls "moderated collaboration" in which any reader of a specific topic page can make suggested edits to the author or authors, who retain control over whether to accept, reject or modify changes before they are published. In its early stages, Knol remains a far cry from Wikipedia, http://www.wikipedia.org, which boasts 7 million collectively edited articles in 200 languages.