The Femina 'Made By You' campaign for India's first fully crowd-sourced magazine, was a hit for its massive reach and response, especially online. From Facebook submissions of articles, to Google Hangouts with contributors, to a collaborative radio spot by dozens of women - every aspect of the campaign was a collaborative effort, representative of the reader.
Here's a link to a case study on this award-winning campaign for Femina:
https://www.youtube.com/watch?v=lEQd4anqpTQ
Creative Directors: Preeti Verma and Karan Sridharan