The New Influencers, by Paul Gillin

The market is quickly getting flooded with books on social media platforms and techniques.  The New Influencers rises above that noise by providing an excellent overview of the marketplace as well as a great deal of practical advice you can put to use today.

Author Paul Gillin, the former editor-in-chief of ComputerWorld magazine, presents a thoroughly researched look at how yesterday's word-of-mouth model has evolved into the socially-networked world we live in today.  Gillin does a great job of keeping things interesting by mixing in a number of interviews and profiles of noteworthy influencers.  This book also has a fantastic companion website that provides updates and bonus material, including the audio recordings of several influencer interviews.

This subject is definitely a constantly moving target but Paul Gillin does a remarkably good job of summarizing the social media of today as well as a glimpse of the future.  If you're involved in any sort of marketing you definitely need to read this book.