Christopher Heine | October 25, 2011 , ClickZ.
For the second consecutive year, McDonald's is running a Promoted Trend ad on Twitter to push the temporary reinstallment of the McRib. While the 30-year-old pork sandwich briefly coming back to the quick-serve chain's menu has become about as predictable as leaves turning gold and brown in the fall, the McRib seems to take on a life of its own on Twitter..... Read more.