What is Word-of-Mouth Marketing?
Definition + Examples
Definition
Word-of-mouth marketing (WOMM) is the deliberate effort to encourage customers to talk about your brand, product, or service to other people — in person, on social media, in reviews, in DMs, anywhere. Organic word-of-mouth happens naturally whenever a product genuinely delights or disappoints; WOMM is the structured practice of generating, accelerating, and measuring it. It overlaps with referral marketing, UGC, and reviews but is broader — it's the umbrella term for everything that gets customers talking.
Why it matters for small businesses
Word-of-mouth is the most trusted form of marketing by every survey ever conducted. Nielsen consistently finds 88–92% of consumers trust recommendations from people they know, versus 30–40% for any form of paid advertising. For most local businesses, word-of-mouth is already the #1 source of new customers — it just happens invisibly and unmeasured. Formalizing it through structured perks, review programs, and shareable moments is one of the highest-leverage things a small business can do.
Examples
Restaurant 'free dessert for a tag'
A restaurant offers a free dessert to anyone who posts an Instagram story tagging them during their meal. Over 18 months, 4,200 tagged stories drive an estimated 30,000+ impressions per month at zero ad spend.
Boutique 'tell a friend' card
A boutique includes a 'tell a friend' card in every shopping bag offering $15 off for both parties. Twelve percent of customers redeem the card with a new shopper — that's effectively a 12% organic-referral rate baked into every purchase.
B2B SaaS community evangelism
A B2B SaaS company invests heavily in a customer community, recognizing power users with public badges and early access. Of all new pipeline, 38% is sourced from community-driven word-of-mouth — without a single referral fee paid.
How to use word-of-mouth marketing in your marketing
- 01Identify your already-happy customers — your NPS promoters and your most-frequent buyers. They're already talking; help them do it more.
- 02Give people a reason to share — a small perk, a shareable moment, or an unexpectedly delightful experience.
- 03Make sharing frictionless — pre-written captions, QR codes, share buttons, and clear tags.
- 04Recognize and reward repeat talkers. Public recognition often beats private cash.
- 05Measure word-of-mouth deliberately: track tagged posts, referral codes, and the share-of-new-customers-attributable-to-existing-customers metric over time.
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Start freeRelated terms
Referral marketing is the structured practice of incentivizing existing customers to recommend your business to new customers.
Net Promoter Score is a customer satisfaction metric calculated from a single survey question: 'On a scale of 0–10, how likely are you to recommend us to a friend or colleague?' Respondents scoring 9–10 are 'promoters,' 7–8 are 'passives,' and 0–6 are 'detractors.
Social proof is the psychological phenomenon where people assume the actions of others are correct in a given situation, especially when they're uncertain.
User-generated content is any media — photos, videos, reviews, social posts, blog comments, unboxing clips — created by real people rather than by a brand.