Caring.com and the Alzheimer's Association posted a press release on PRWeb.com recently that brings to light how their social media campaign and how it has been successful.
The website and the Alzheimer's Association teamed together to take this social media risk with the Purple Ribbon Campaign, which allows users to post a purple ribbon on their blog, website, etc. to help expose and spread awareness about Alzheimer's. The ribbon was posted on over 1,000 blogs and websites during a period of only 7 weeks.
Caring.com contributed 10 dollars for every ribbon that was posted, which put the total at over 10,000 dollars. I think this is a perfect example of a successful social media campaign and a similar idea could be adapted for a number of organizations and companies.