Nutella, the chocolate hazelnut spread brand, has soured many of its social media fans by cracking down on a superfan who has helped spread the word in social media for more than seven years.

LONDON – To dunk or not to dunk! That’s the successful slogan of an advertising campaign getting millions of likes on Facebook. It’s the Oreo’s advertising campaign. If the famous biscuit brand wanted to have the same success with a traditional advertising campaign, they would have to spend millions of dollars; almost one dollar per one Facebook like. Instead, with a simple but well-thought out slogan and using the most popular social networks, now Oreo has almost 34 million fans on Facebook, and loyal fans at that.