Gadling recently posted an article about postcards, which states: “The fun thing about postcards is that they lack everything current technology gives us.” It’s 2011 and my life is full of digital wonders. All the more reason to send postcards, I say. Who doesn’t love to get something handwritten from a friend in their mailbox? I know I do. Trouble is, once you are on the road, it’s a pain to dig up addresses and remember all the people you promised to write. So here is something I do when traveling, something super simple, and yet – every time I…