Word of mouth is a form of communication where people share information about products, services, or experiences with others. This informal method of spreading information can significantly influence opinions and decisions, as recommendations from friends or family are often seen as more trustworthy than advertisements. Businesses often rely on word of mouth to grow their customer base. Positive experiences can lead to customers telling others, creating a ripple effect. Conversely, negative experiences can also spread quickly, highlighting the importance of maintaining good quality and service to encourage favorable discussions.