The web can be represented by a graph with special regions: SCC, IN, OUT and TENDRILS.
Regions are defined by the link-path-reach from one website to others.
The linkage to and from a website (in- and out-degree) seems to conform the power law, which is also mentioned in this document.
X. Yan, P. Yu, and J. Han. Proceedings of the 2004 ACM SIGMOD International Conference on Management of Data, page 335--346. New York, NY, USA, ACM, (2004)