We’ve all come across bad manners in our lifetime, the straphanger who spits in front of us on the subway platform – the man or woman who cuts into the line at the deli. But, while it’s easy to spot bad manners, it’s harder to recognize good manners in today’s fast-paced, digital society. In his book, Would It Kill You to Stop Doing That?: A Modern Guide to Manners, author Henry Alford aims to find out what good manners look like in an era of constantly beeping cell phones and live-tweeting. Alford's our guest on this week's on Cityscape.