Retail Dominates in Top 50 Rankings

I was going through some recent (11/08) comScore data and came across something I thought was interesting.  A list of the top 50 internet properties in the United States.  The rankings are based strictly from unique visitors from home, work, or university locations. 
 
You can view the Top 50 Properties on the internet here.  Even though search engines dominate the top rankings, it is the retail industry dominating in numbers.  It was actually a surprise to see some Weather competition in the midst.  However, the greater surprise to me was to see a company like ESPN ranked 43 out of the 50, and Adobe ranked 21!  It may not be a surprise to others, but to me it sure was.
 
Here is a breakdown of the top 50 properties on the internet by category/industry.  Some of the Miscellaneous include Glam Media, Real.com Network, United Online, Inc., and others.

I am ultimately curious what sites fall under the "Adobe Sites" ranking.  I am fully aware of their product line, but might be unaware of other online projects.  If you know of any Adobe Sites that are lingering around the internet.  Please let me know!