Let’s start with the word tittle-tattle, which is a fairly well known English phrase that means to hold a casual conversation about other people, typically involving details that are not confirmed as true. In other words: idle gossip. Tattle means to to let out secrets to someone in authority, often to cause trouble. So, we can infer that tittle-tattle is to whisper about other peoples secrets behind their backs. Now we are not going to do that but we will reveal some secrets about typography.