Affiliate marketing is already as big as email

There is a new report on performance-based digital marketing by BI. Here are key takeaways:

• 15% of the digital media industry's revenue now comes from affiliate marketing
• Affiliate marketing now accounts for 16% of US e-commerce orders - same level as email, outperforming social and display (still after SEO, SEM and Direct)
• 74% of of US shoppers say they visit two to three nonretail websites before completing a purchase

Business Insider article