Unilever has launched a campaign that involves an interactive cover photo on its Facebook Timeline. Part of the brand's continued commitment to sustainable business, the campaign encourages Unilever's Facebook fans (of which there are more than a million) to pledge their own commitment to sustainable living; in return, they get included in Unilever's interactive cover photo mosaic.
Participants take the pledge by offering tips, suggestions and promises on how they plan to live more sustainably. These comments -- which can be as simple as a tip to switch the lights off when you leave a room -- will show up whenever users hover over individual photos on the interactive cover photo. What's more, each week Unilever will choose a 'Featured Fan' whose tips and promises will be highlighted.