Ads pushed deeper into comment threads

As a newly public company under pressure to grow revenue, Reddit spent 2024 and 2025 steadily pushing advertising into the part of the platform users arguably value most: the comment threads. The company expanded its 'Conversation Ads' format — promotions placed within the comment sections beneath posts — and in 2025 extended placements deeper into comment pages, positioning ads alongside the back-and-forth discussion where users research products and debate topics.

Reddit pitched the move to advertisers as high-intent inventory. Because Reddit comment sections are where people actively seek and share information, the company argued, ads embedded there reach users at a receptive moment, expanding reach 'at scale' as people scroll through related discussion. In June 2025 Reddit went further, introducing 'Conversation Summary Add-ons' under its Reddit Community Intelligence umbrella — ad units that use AI to summarize relevant community discussion, which Reddit said tested with a 19% higher click-through rate than standard image ads.

For the company's commercial story, the expansion was a logical step: monetize the engagement that already exists in comments rather than only the feed. But it cut against the grain of Reddit's culture. The comment thread is the heart of the Reddit experience — the place where the platform's claim to authentic, human conversation actually lives — and inserting paid content into that space risked diluting exactly the quality Reddit markets to advertisers and AI partners alike.

The deeper concern critics raised was about trust and the blurring of line between organic discussion and promotion. Users go to Reddit comments specifically because they expect candid, peer opinion rather than marketing; AI-summarized ad units that mimic the look of helpful community context risk eroding that expectation, especially as the same period saw growing worry about AI-generated 'slop' and coordinated brand-seeding designed to influence both users and AI answers. Placing native-feeling ads in the comments arguably compounded the difficulty of telling authentic conversation from commercial messaging.

While no single backlash defined the rollout, the steady encroachment of advertising into comment threads became a persistent theme in user complaints about the post-IPO platform — part of a pattern, alongside paywall musings, awards monetization and data-licensing deals, in which Reddit progressively converted its community spaces into revenue surfaces. The episode illustrates the central tension of Reddit's business: the more aggressively it monetizes conversation, the more it risks degrading the authenticity that gives that conversation value.