Astroturfing is the practice of manufacturing fake grassroots support. Using coordinated fake accounts, sockpuppets, planted posts, or paid engagement to make brand promotion look like genuine, spontaneous community consensus. The name is a pun on "grassroots": it's synthetic turf made to resemble the real thing.
It matters for AI visibility because engines lean heavily on community-edited, experience-rich sources like Reddit and Quora, treating them as authentic human signal. That makes fabricating consensus tempting. Seeding threads with brand mentions or buying aged accounts to plant citations. It rarely works. Platforms deploy sophisticated anti-spam detection, and AI engines are learning to discount gamed and injected content, so the manufactured signal dilutes the very corroboration it tries to fake.
Astroturfing overlaps with site reputation abuse and, when it targets AI answers directly, with prompt injection. The durable alternative is earned mentions from real users. The one signal manipulation cannot replicate.