Word of mouth usually happens when someone is happy enough with a product or service that they tell others about it. Digital marketing can speed that process up by making it easier for customers to share their experience online. A business can encourage this by asking satisfied customers to leave reviews, share posts, or tag the business in their own content. Running campaigns that reward customers for referring friends is another way digital marketing drives referrals. When a business stays active online and posts content that people find useful or entertaining, those people are more likely to share it with others, which is basically digital word of mouth.