What’s being searched for
eMarketer has put out their top keyword list of 2006:
http://www.emarketer.com/Article.aspx?1004513&src=article1_newsltr
And AdAge recently released a Search Marketing Fact Pack with the latest industry trends and data:
http://adage.com/digital/article?article_id=112896 (click on the cover image on the page to download the 52 page PDF).