Seth Godin’s Web 2.0 Traffic Watch List is based on traffic to each Web2.0 property. Here is another list of top 200 based on page activity (time spent).

We are excited to announce the creation of the Attention 200â„¢, the two hundred sites that yield the largest share of our attention on the web. The Attention Index is based on the amount of time U.S. internet users spend across the top one million websites. The Compete Attention 200â„¢ represents the best of the best each month.

Source: Compete.com Blog » Announcing: The Compete Attention 200™

If you like this, you may also be interested in :

1. 153 Hours of TV per Month and The Million Dollars You Could Have Made Otherwise
2. Yahoo shutting down GeoCities, The First Personal Web Page for many
3. Faster Web Pages Makes Users Happy
4. Notable Thoughts: Optimizing Your Web Application
5. Google workshop on Social Web and Cloud Computing in New Delhi