Study of Similar Campaigns

Facts in button form fill up Jamie Oliver's school section of Jamie's food revolution, it is a very interactive setup, with the ability to sign up to an online petition.

 
It even features tips on how to act, and how to share the idea, through social networking etc. in a 'top 5 actions' bar on the right hand side of the page. The bar can be found on this page...

http://www.jamieoliver.com/us/foundation/jamies-food-revolution/activists