http://adage.com/digital/article?article_id=145502

Of course, it’s important to remember that fans on Facebook is NOT the same thing as unique visits to your brand’s webpage. There are lots of “fans” out there that don’t do a whole lot once they become fans.

Still, this continues to show how social media is pulling more people and brands into its turf and how some brands have done an exceptional job of leveraging their Facebook pages as part of an overall integrated marketing mix.

The most interesting case studies to learn from and/or look deeper into: Starbucks, Oreos, Pampers, and Walgreens.