Google has made a new application Knol public. From the Google Blog..."Knol is a new Google service created for sharing knowledge. The service has been announced in December 2007 and it's now publically available." To me it seems like Google's version of Wikipedia. People can visit Knol and create their own knol article on a subject or topic of expertise. Knol encourages people who know a lot about things to share their knowledge. People can collaborate on a Knol toegether and there may be more than one Knol on a subject.
Read Google's official Blog about Knol
Visit Knol and share your Knowledge