From the Google Knol What’s New Section, here are the latest changes that makes knols more attractive and useful:

• We have simplified the links on the top of the page, and added the “My profile” drop-down.
• You can now star knols as your personal “Favorites”, adding them to a private list on your profile page.
• You can create knols using templates. Authors, write good templates and we will feature them!
• From an author’s profile you can subscribe to an Atom Feed of authors revisions, comments and replies.
• We added a Review Scorecard, one step toward addressing spam, plagiarism and low-quality content.

Image by Mykl Roventine.