For those of you that have written content for the Google site Knol, I thought I'd let you know that they are shutting down soon. So, you should move your content ASAP if you want it to still be online. Here's the email I received from Google:

As part of Google’s prioritization of product efforts, we will be retiring Knol. From now through April 30th, 2012, Knol will work as usual, but we’ve made it easy for you to download your knols to file and/or export them to Wordpress.com. From May 1, 2012 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. We hope that this timeline provides you ample time to transition your content. For more information, please visit our FAQ: https://knol-redirects.appspot.com/faq.html

Thank you,
The Knol team