Knol - Google has gone live with their project to create user written information articles. It is not like Wikipedia in the sense that an article is owned by an author, at least as default. When you start a new "knol" you can also allow everyone to edit if logged in. That author can write about what he wishes to write, even when there is already an article about that topic. Other people can give a rating (stars) and give comments. Authors received a part of the earnings of the advertisements displayed on there articles if the switch the advertisements on. The default license is "Creative Commons Attribution 3.0". It is currently not clear of the GFDL-licence that Wikipedia is using is compatible. But you can also pick a licence that does not allow commercial use or you can disallow all use elsewhere. So knol be very open or very restrictive depending on what you chose as author of a knol.
http://www.youtube.com/watch?v=6PYO-fN_VgU - Jimmy Wales gives his idea about Knol & WikipediaEN Wikizine
s.a. Stefan Meretz in keimform.de in 07/08