Market Manipulation & Crypto

In June 2026 security researchers documented a Reddit advertising campaign impersonating the BBC, Financial Times, and The Guardian to funnel users into fake AI-powered crypto 'investment' platforms promising outsized returns.

Moderators of r/Bitcoin permanently banned 'Bitcoin Mechanic', a prominent Bitcoin Knots developer, for a two-sentence post noting on-chain signaling around the contentious BIP-110 — reviving long-running accusations that the subreddit censors protocol dissent.

After Robinhood halted buying of GameStop and other Reddit-driven meme stocks on Jan. 28, 2021, dozens of retail-investor suits were consolidated into an MDL; the antitrust theory was ultimately dismissed and affirmed on appeal in 2024.

When Keith Gill resurfaced in 2024, an investor filed a securities-fraud class action alleging a GameStop 'pump-and-dump' tied to his Reddit/X posts; he voluntarily dismissed it three days later, without prejudice.

Reddit let users and moderators buy IPO shares with no lock-up, free to sell on day one, while warning investors that its own r/WallStreetBets community could whip the stock into meme-stock volatility — an unusually self-aware set of risk disclosures.

After splitting from r/GME in 2021, r/Superstonk became the center of a self-reinforcing belief system organized around the 'Mother of All Short Squeezes' (MOASS) and a mass share-registration campaign, with skeptics dismissed as paid 'shills'.

As 'pig-butchering' romance-investment scams drained billions from victims worldwide, Reddit's r/Scams and related communities became a major venue where victims sought help — even as scammers also surfaced on the platform.

Reddit's abrupt October 2023 shutdown of its blockchain 'Community Points' rewards crashed user-held tokens — MOON down ~85%, BRICK ~70%, DONUT ~60% — with some holders calling it a rug pull.

Moderators of the 6.9-million-member r/CryptoCurrency dumped roughly $150,000 worth of the community's MOON token minutes before Reddit publicly announced it was shutting down the program that gave the token value — and were removed for what users called blatant insider trading.

Reddit launched blockchain-based 'Collectible Avatars' on Polygon in July 2022 while conspicuously avoiding the word 'NFT,' drawing user backlash over unownable assets and a crypto pivot many saw as cynical — with related features later quietly sunset.

The influencer-promoted 'Save the Kids' charity token, exposed as a pump-and-dump, was partly organized through Reddit — where YouTuber Sam Pepper promoted the project, built its moderator team, and reportedly handled the presale.

As r/wallstreetbets drove the January 2021 GameStop short squeeze, Discord banned the community's server for repeated hate-speech violations, and days later a group of returning moderators attempted to seize control of the subreddit to cash in on a movie deal, prompting Reddit to remove them.

Days after the GameStop squeeze, an investor filed a proposed securities-fraud class action alleging Keith Gill ('DeepFuckingValue'/'Roaring Kitty') hid that he was a licensed professional while promoting GameStop to retail traders.

On Feb. 18, 2021, the r/wallstreetbets figure 'DeepFuckingValue' testified before the House Financial Services Committee, denying he coordinated the GameStop squeeze and insisting he was an ordinary investor.

The SEC's October 2021 staff report on the GameStop episode concluded that broad positive sentiment — not a classic short or gamma squeeze — sustained the run-up, and flagged 'digital engagement practices' for further study.

SafeMoon, a token whose creators later faced US fraud charges, went viral partly through weekly Reddit AMAs and promotion on crypto subreddits, with a project insider calling the AMAs the 'primary reason' for its early success.

During the January 2021 GameStop squeeze, members of Reddit's r/WallStreetBets directed an off-platform harassment campaign at short-seller Andrew Left of Citron Research, including hacked accounts used to contact his children.

r/CryptoMoonShots, a subreddit dedicated to surfacing tiny new tokens, became a recurring funnel for rug pulls and 'honeypot' contracts — including the notorious SQUID token — where promoters used bot-driven engagement to lend fake credibility.

In late January 2021 a Reddit community called r/SatoshiStreetBets openly organized a 'coordinated' buy-in that drove Dogecoin up more than 800% in a day, in a dynamic regulators and academics described as a textbook pump-and-dump.

After moderator u/pinkcatsonacid publicly raised concerns about newer r/Superstonk moderators, the subreddit's lead moderators stripped her of her position and banned her, triggering mass resignations and the migration of tens of thousands of GameStop 'apes' to the breakaway community r/GMEJungle.

At the height of the January 2021 GameStop frenzy, Discord banned the official WallStreetBets server for hate speech and the subreddit briefly went private, amid accusations that some moderators were trying to cash in on the community's sudden fame.

Reddit removed WallStreetBets founder Jaime Rogozinski as a moderator in 2020 for 'attempting to monetize a community,' a move he later challenged in a 2023 lawsuit alleging the rationale was a pretext to control a valuable brand; courts ultimately ruled against him.

A 2018 Vice investigation detailed a for-hire Reddit astroturfing operation run by a user called 'Aaron,' who orchestrated paid upvote campaigns and networks of dummy accounts — each on its own proxy IP — to artificially pump cryptocurrency projects on r/CryptoCurrency and beyond.

BitConnect, a ~$2.4 billion cryptocurrency Ponzi scheme that promised guaranteed returns from a fictitious trading bot, was heavily promoted within an active Reddit community (r/bitconnect) until its January 2018 collapse; U.S. authorities later indicted its founder and convicted its top U.S. promoter.