Last week, Mars, Inc., led by the interactive shop Agency.com, launched a radically redesigned Web site for their candy product, Skittles.  The new “un-site” is a simple overlay on social networks focused on the product. One view was of the Skittles' Facebook page.  Another view was of Skittles' Wikipedia entry.  The company chose a Twitter feed about Skittles as its homepage.

In just a few days, the Facebook page had more than 580,000 friends. “Tweets” were coming in fast and furious ...