Over a 3-week period, over 20,000 participants shared the fun experience – with an average of 4 people collaborating each time. Sales of 18 nuggets were 3 times higher than anticipated. And hundreds of comments and articles were shared through social media. Which just goes to show: It’s always fun to share.Originally planned for a limited time only, the launch of McDonald’s 18 Nugget ‘Share Box’ was so successful, it will soon return to the menu permanently as a staple product alongside the standard 6-nugget option.