Does Reddit have an astroturfing problem? What the data suggests

A data analysis of Reddit knife subreddits found that one chef's knife brand receives 31% of its purchase recommendation mentions from just 5% of accounts—four times more than statistical chance would predict—suggesting potential astroturfing. The author used a machine learning model to analyze brand mentions across knife-related subreddits and identified suspicious concentration patterns, though the analysis does not directly connect any specific accounts to known paid posting services. The findings highlight how Reddit's reputation as a source of authentic user opinions makes it an attractive target for brands seeking to plant paid endorsements.