We chatted the other day in New York with Anna Post, the great-great-granddaughter of etiquette icon Emily Post. Anna is author of Emily Post’s Wedding Parties: Smart Ideas for Stylish Parties, From Engagement to Reception and Everything in Between. In addition to being a regular source of etiquette advice in print and on the radio, Anna blogs on etiquette in the 21st century. Her blog, “What Would Emily Post Do?” covers topics ranging from green weddings to business to pop culture.