In a saloon town such as San Francisco, the bartender plays a crucial role. Confessor, friend, sounding board — the man or woman behind the plank sees to it that our needs are met with elegance, grace and often wit. They see humanity at its best and most convivial, but also offer a nod and a welcome to the lonely. But what do they see when they look at us? What are the tricks of their trade? And what lessons have they learned along the way? In this Examiner weekly feature, we talk to some of our local bartenders to find out.