With 31.9 million global users in May, 5-year-old startup Pinterest has become the object of marketer affection and now boasts a $1.5 billion valuation
via Advertising Age – Homepage http://adage.com/article/creativity-50/creativity-50-2012-ben-silbermann-evan-sharp/235758/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+adage%2Fhomepage+%28Advertising+Age+-+Homepage%29