Business Insider in 2008:
Google Launches Wikipedia Killer “Knol”
Google in 2011:
Knol will work as usual until April 30, 2012, and you can download your knols to a file and/or migrate them to WordPress.com. From May 1 through October 1, 2012, knols will no longer be viewable, but can be downloaded and exported. After that time, Knol content will no longer be accessible.
Business Insider, hyperbole much?