High Quality Content by WIKIPEDIA articles! Word of mouth, or viva voce, is the passing of information from person to person by oral communication. Storytelling is the oldest form of word-of-mouth communication where one person tells others of something, whether a real event or something made up.Oral tradition is cultural material and traditions transmitted by word of mouth (orally) from one generation to another. Storytelling and oral tradition are forms of word of mouth that play important roles in folklore and mythology. Another important form of word of mouth is oral history - the recording, preservation and interpretation of historical information, based on the personal experiences and opinions of the speaker. Oral history preservation is the field that deals with the care and upkeep of oral history materials collected by word of mouth, whatever format they may be in. An important area of marketing is called word-of-mouth marketing, which relies on the added credibility of person-to-person communication, a personal recommendation.