Word-of-Mouth Marketing

Word-of-mouth is the oldest form of marketing and the hardest to measure. Nielsen's repeated studies keep landing on the same result: peer recommendation outranks advertising on trust by a wide margin. One referral can outweigh a lot of paid impressions.

Modern teams don't leave WOM to luck. Referral programs, shareable product experiences, community programs and influencer seeding are all mechanisms for engineering it into the growth model rather than hoping for it.

Under GEO, WOM picks up a second life. The recommendations people make in DMs, communities and forums become part of the external signal that LLMs ingest and cite. Person-to-person word-of-mouth increasingly shapes how AI describes your brand back to the next prospect.