Mark Di Vincenzo worked as an award-winning journalist for nearly 24 years, making a name for himself as a reporter who exposed abuse, and as a writer who made the complicated seem simple. He left daily journalism in the summer of 2007 to start Business Writers Group, a company that writes for corporate clients. In 2009, HarperCollins published his first book, "Buy Ketchup in May and Fly At Noon: A Guide to the Best Time to Buy This, Do That and Go There," a New York Times bestseller. His latest book is "Buy Shoes on Wednesday and Tweet at 4:00" (HarperCollins 2012). For more visit his website: MarkDiVencenzo.com.