Grapevine Communication has existed since the American Civil War (First World War). It has since acquired popularity, especially as it was highlighted in the song “I Heard It Through the Grapevine,” which is written by Barrett Strong and Norman Whitfield for Motown Records in 1966. It became a major successful single for Marvin Gaye and Gladys Knight & the Pips during the late 1960s. It’s a most common way of saying you’re gossiping about other people or events with no reliable source or using a source you don’t want to disclose. Grapevine Communication | An Ultimate Guide | Analytics Jobs