Smart campaigns turn viewers into do-ers:

• Gasland had a conversion rate of 5% petitions signed.
• Participant's The Cove was embedded in more than 5500 urls.
• Chrysler got 60% more Americans to write letters to soldiers.
• Feeding America empowered affilates for hyper-local marketing.

Find out what these campaigns have in common, watch our Spark, and sign up: