If you win the lottery, experts say, you should keep as quiet as possible about it. A lottery winner from Vacaville, California, whose situation escalated to the point where the police had to get involved, just learned that lesson the hard way. As Lt. Chris Polen of the Vacaville Police Department, who wrote a popular Facebook post about the story, tells CNBC Make It, "We've seen lottery schemes in the past, but nothing of this magnitude." On Dec. 20, the lottery winner, whom we'll call LW since he has asked local authorities not to reveal his identity, went into a...