The service provides analysis of a website to evaluate its content and functional categories and its performance versus other sites in the same categories. It reviews content available at a specified web domain and assigns that site overall to one or more categories from the provider's taxonomy of websites. A ranking within each category indicates that site's performance relative to its most direct competitors.
API methods support submission of a website domain to retrieve a list of the categories, from those maintained by the service, that best describe its content and function. Returned data provide a rank for the site within each category which represents the site's popularity with users of sites in that category.