A social strategy: how we profit from social media

The arc of the book

Social failures and social solutions

"Meet" platforms : eHarmony and Okcupid

"Meet" platform : Twitter

"Friend" platforms : Facebook and mixi

"Meet" and "friend" platforms : LinkedIn & Friendster

"Meet" and "friend" platform : MySpace

Social strategies

Low-cost "friend" social strategy at Zynga

Low-cost "meet" social strategy at Yelp

Social strategy at American Express

Social strategy at Nike

Building social strategy at XCard and Harvard Business Review

Conclusions.