Compete has introduced 'Attention metrics'. Compete says, “you can use Compete.com to measure a site’s Attention. Attention fuses engagement (measured by time) and traffic (measured by unique visitors) into a single, more complete picture of a web site’s value.”
Read/Write web takes a closer view of Compete's 'Attention metrics'.
The reason is that interactive Web page technologies such as Ajax and Flash – not to mention online video – are making simple page views and visits increasingly outdated. With Ajax for example, information on a webpage can be updated without needing to refresh the page. In order to get around these issues, Compete has introduced two specific attention metrics.
Attention: The total time spent on a site as a percentage of the total time spent online by all U.S. internet users
Velocity: The relative change in daily Attention; velocity is used to determine the relative growth of a website compared to other sites
Screenshot of twenty web sites in February ranked by consumer attention via Compete.