Sarnoff's law (after [ http://www.time.com/time/time100/builder/profile/sarnoff.html "David Sarnoff"]) describes the value of broadcast networks (i.e. where only 1-to-many type connections happen) as being proportional to the number of actors, i.e. proportional to N
Contrast this with MetcalfesLaw and ReedsLaw
[ http://www.synesthesia.co.uk/blog/images/network.gif ]