Reddit astroturfing: one knife brand gets 31% of mentions from 5% of accounts
Original: Does Reddit have an astroturfing problem? What the data suggests
Why This Matters
If Reddit's buying threads are gamed at scale, one of the last trusted consumer signals online degrades fast.
A data analyst scraped six knife-focused subreddits and found one Japanese chef's knife brand received 31% of its 'what should I buy' thread mentions from just 5% of accounts — four times the rate chance would predict. Manual review of those accounts' full Reddit histories deepened suspicions of coordinated paid promotion.
Peter Vijeh, a knife enthusiast who runs the New Knife Day catalog site, set out to test a concrete question: in Reddit buying threads, who exactly is doing the recommending? Using a fine-tuned GLiNER named-entity model built to extract brands, models, and steel types from knife comments, he analyzed every relevant comment across six subreddits — r/chefknives, r/japaneseknives, r/knives, and others.
The headline finding: one chef's knife brand collected 31% of its purchase-recommendation mentions from just 5% of accounts, roughly four times what random distribution would suggest. Vijeh then pulled the full comment histories of those flagged accounts. He won't publish the usernames, but says the account-history comparison is what convinced him the concentration wasn't coincidence.
The commercial infrastructure for this kind of operation is openly advertised. REDCmts sells individual Reddit comments for $9.99, or 100 for $699.99, using 'real, aged accounts.' Soar says accounts are 'aged and manually warmed' for weeks before any brand mention appears. Bazzly automates replies to posts that look like shopping queries.
Vijeh is candid about the trajectory: AI-generated comment histories are now good enough to pass casual inspection, making bot accounts 'basically undetectable.' His worry is that recommendation threads will eventually reflect ad spend more than product quality — undermining the entire 'search term + reddit' habit that millions of shoppers rely on.