Juice Analytics has build, based on ComScore Data (Aug - Nov '07) this interesting, interactive Treemap of the Internet
© 2007 Juice, Inc.
It gives a good picture about which sites are has won the visitors/users and who shares or owns the Internet in a respective Category.
Go to the juice analytics click on the the categories you are interested and explore the 'hidden' data in this interactive map ... but give yourself a time limit before you go, this interactive map is a very sticky one!
via ComScore Voices