Astroturfing

Astroturfing is the practice of creating the false appearance of grassroots support for a product, cause, politician or investment. Instead of genuine enthusiasm from ordinary people, the "support" comes from paid promoters, coordinated campaigns, bots or fake accounts that hide who is behind them. The name is a play on AstroTurf, a brand of artificial grass: astroturf support looks like real grassroots but is manufactured.

Astroturfing appears in politics, advertising, online reviews and financial markets. In crypto and stock trading it is often linked to market manipulation, especially pump-and-dump schemes, where fake hype lures buyers so insiders can sell. It overlaps with shilling, which describes promoting something while hiding a financial interest, and with paid promotions by influencers that are not properly disclosed.

Imagine a new restaurant that hires actors to queue outside every evening. Passers-by see the queue, assume the food must be great and join it. The queue looks like word of mouth, but it was bought. That is astroturfing.

Online, the queue is made of comments, likes, reviews and posts. Hundreds of accounts suddenly praise a new token or a stock, all with similar wording, and newcomers assume the excitement is real. When the people behind the campaign sell, the crowd turns out to have been mostly empty.

The term is generally credited to US Senator Lloyd Bentsen, who in 1985 described a flood of letters promoting insurance industry interests as "AstroTurf" rather than grassroots mail. It spread through political commentary in the 1990s and became widely used once the internet made it cheap to create fake identities. Today it describes everything from fake product reviews to state-backed influence campaigns on social media.

• Sock puppets. One person or group runs many fake accounts that appear to be independent users.
• Bots. Automated accounts post, like and share content at scale to push a topic into trending lists.
• Paid posters. Promoters pay people or agencies to post supportive content without disclosing payment.
• Fake reviews. Businesses buy positive reviews for themselves or negative ones for rivals.
• Engagement farming. Rewards such as airdrops or bounties are offered for posting about a project, creating volumes of shallow promotion.
• Fake communities. Chat groups filled with bots that cheer every announcement and attack critics, sometimes spreading fear, uncertainty and doubt about competitors.

Crypto is especially exposed because many tokens have no earnings or official reports, so social media buzz drives price. New meme coins can rise sharply on coordinated posts, paid key opinion leaders and bot-boosted trending tags, then collapse once insiders sell. Inflated follower counts, fake trading volume through wash trading and fabricated user numbers often accompany these campaigns. In equities, regulators have charged promoters who published supposedly independent articles about small companies while being paid by them, and who ran social media campaigns to pump thinly traded shares. Astroturfing also plays on fear of missing out, encouraging people to buy before thinking.

Several legal frameworks apply. In the United States, the Federal Trade Commission requires that endorsements disclose material connections, and in 2024 it finalised a rule banning fake reviews and testimonials, including those attributed to people who do not exist. The Securities and Exchange Commission treats undisclosed paid promotion of securities as a violation of anti-touting rules and pursues manipulative campaigns as fraud. The EU's unfair commercial practices rules ban traders from falsely presenting themselves as consumers, and the UK has banned fake reviews under consumer protection legislation that took effect in 2025. Platforms also prohibit coordinated inauthentic behaviour and remove networks of fake accounts, though enforcement is uneven.

Warning signs include sudden bursts of near-identical posts, new accounts with few followers posting enthusiastically, comments that avoid specifics, aggressive attacks on anyone asking questions, and promotions that do not disclose payment. Tools that analyse account age, posting patterns and network links can help spot coordinated campaigns. Investors are advised to rely on primary sources, such as official filings, audited reports and on-chain data, rather than social media sentiment, and to treat any campaign that urges immediate buying with suspicion.