Books on social media influence

I’ve started my summer reading early this year, with a round of books on social media and influencer marketing. Please speak up, if you can recommend other books in these areas.

Groundswell - Winning in a world transformed by social technologies, by Charlene Li and Josh Bernoff. “It’s a book by two Forrester analysts with practical, data-based strategies for companies that want to harness the power of social technologies like blogs, social networks, and YouTube. Featuring 25 full case studies, a complete road map for social strategy, and data from around the world.” - excerpt from the book microsite

The New Influencers - A Marketer’s Guide to Social Media, by Paul Gillen. “The New Influencers is a book for corporate marketers and executives who want to understand and engage with the vast new channels of influence that are emerging online.” - excerpt from the book microsite

Influencer Marketing - Who Really Influences Your Customers, by Nick Hayes and Duncan Brown. “The book demonstrates clearly, authoritatively and with numerous real examples Seth Godin’s widely accepted view that it’s ‘useless to advertise to anyone except connectors with influence’… For all those involved in marketing and sales this book will be an essential analysis of how to identify who has influence, how they apply it, and how you can turn it to your advantage.” - excerpt from the book microsite