This document discusses social bookmarking and networking sites like Delicious and Facebook. It contrasts social graphs that show superficial connections versus life graphs that show meaningful relationships. Several laws of communication networks are presented, including Sarnoff's Law, Metcalfe's Law, and Reed's Law, which describe how the value of networks increases with the number of users. The document also discusses participation inequality online where a small number of users create most of the content. It introduces some social media analysis tools like Klout and TrendsMap and distinguishes between goals and objectives, noting that objectives should be specific, measurable and attainable.
