Part of PatternLanguageForTheSocialNetwork
The net can't (and of course won't) won't be smoothely distributed. (PowerLaws).
Clusters of dense interactions give it focal points, emergent places and things to refer to. Landmarks.
They also form Creative Networks.(RossMayfieldsThreeScalesOfNetwork)
Dense clusters grown int the presence of PlsWiseElders, PlsYoungTurks and PlsGrandioseProject(s). And give rise to PlsGrassRootsProjects
but NOT by the ultra high trafficed sites such as PlsConnectionToTheMedia which encourages a broadcast model.
Help dense clusters form by providing PlsRiddiculouslyEasyGroupForming, PlsBlogroll(s), PlsForums