Have you heard about Cadbury’s viral marketing success?

“We have seen and heard about a lot of impressive social media marketing campaigns in recent months,” Mashable associated editor Ben Parr wrote. “But the most recent campaign from Cadbury may be the most creative idea yet. Confectionary giant Cadbury (the company that makes Trident gum and the famous creme eggs) is going all-out in promoting its Creme Egg Twisted candy bars with a campaign known as ‘Operation Goo.’ Agents in this contest must rack up as many social media vie…