Book excerpt: With the enormous growth of the internet and social media sites, digital marketing is now worth more per annum than TV advertising in the UK. Social network advertising spending is expected to increase to a staggering $4.3 billion in 2011 in a bid to attract today's media-savvy consumer. The Best Digital Marketing Campaigns in the World brings together an international collection of the most successful digital marketing campaigns of our time, assessing what they achieved and the business lessons learnt. This practical and insightful book explores how businesses large and small have harnessed social media, blogs, forums, online video and email to boost their brand and attract customers. Damian Ryan and Calvin Jones present a selection of hand-picked case studies, sharing the knowledge and skill of the world's top creative minds. Covering everything from household names such as Pizza Hut and Pepsi to Obama's 2008 presidential election campaign, this book is the must-read guide for all marketers looking to embrace the new digital landscape.