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.
L. Antiqueira, and L. Costa. Proceedings of the 2nd Workshop on Complex Networks (CompleNet'2010), volume 116 of Communications in Computer and Information Science, page 46-56. Springer, (2011)
D. Antonczyk, B. Fitzenberger, and U. Leuschner. ZEW Discussion Papers, 08-132. ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research, (2009)
J. Aranda, S. Easterbrook, and G. Wilson. 1st Workshop on Socio-Technical Congruence (STC), at the 30th International Conference on Software Engineering (ICSE'08), Leipzig, Germany, 10 May 2008, (May 2008)
R. Baeza-Yates, and A. Tiberi. KDD '07: Proceedings of the 13th ACM SIGKDD international conference on Knowledge discovery and data mining, page 76--85. New York, NY, USA, ACM, (2007)
D. Bagchi, P. Choudhury, and R. Menon. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)
C. Baig, and B. Edwards. Journal of Non-Newtonian Fluid Mechanics, 165 (17–18):
992 - 1004(2010)<ce:title>Proceedings of the 5th International Workshop on Non-Equilibrium Thermodynamics IWNET 2009</ce:title>.
P. Baraldi, B. Cacciari, R. Romagnoli, G. Spalluto, S. Moro, K. Klotz, E. Leung, K. Varani, S. Gessi, S. Merighi and 1 other author(s). J Med Chem, 43 (25):
4768-80(December 2000)Baraldi, P G Cacciari, B Romagnoli, R Spalluto, G Moro, S Klotz,
K N Leung, E Varani, K Gessi, S Merighi, S Borea, P A Research Support,
Non-U.S. Gov't United states Journal of medicinal chemistry J Med
Chem. 2000 Dec 14;43(25):4768-80..