Visitor areas of interest were assessed by summing frequency of visitor searches of the 21 Focus of Review topic areas and visitor use of the topic area browse menu for the period January 1, 2010 to December 31, 2010. Visitor site usage is tracked via Google Analytics, a web analytics tool that collects and aggregates nonpersonal data to report on visitor interaction with the health-evidence.ca website. Total search and browse access by unique visitors were ranked from highest to lowest pageviews. The top 10 areas of interest were summed to generate the denominator: total visitor interest in the top 10 topic areas.