Is Google skewing search to promote knol‾

Danny Sullivan, who writes for the UK's Guardian newspaper, reckons he has checked 30 knol pages (Google's response to Wikipedia) and finds a third made the top 30 in Google's search results. What's going on‾

See full story here http://blogs.guardian.co.uk/technology/2008/07/25/is_google_cooking_the_books_to_boost_knol_pages.html and a commentary on knol's usefulness here http://www.theregister.co.uk/2008/07/23/google_opens_knol/