◾ The Network Effect and Web Topology: What Size and Shape Is the Web and Why Does It Matter?

Advantage came to Google for seeing more deeply into the nature of the network, and building tools to harvest and apply data that was hidden in the network graph.

TIM O’REILLY (2008, Blog)

What we are discovering with Web 2.0 is that companies have learned to capitalize or to monetize this network eect and its exponential value in dierent ways.