Can you remember the last time you used a payphone? Neither can we. Public telephones are an outmoded piece of our communication infrastructure, and NYC is ready to replace them. The city has been toying with the idea for years, and today it finally announced its final plans: LinkNYC -- a network of 10,000 gigabit WiFi hotspots that will line the streets of all five boroughs of New York City. The project will replace all but a small handful of historic payphones with "Links," small towers equipped with WiFi, an Android tablet with select city-service apps and, of course, the ability to make phone calls. What's missing? The word pay: it's all free.