Related papers: You See It, They Don't: An Exploratory Study of User-to-User Variation in Instagram Comments

You See It, They Don't: An Exploratory Study of User-to-User Variation in Instagram Comments

URL: http://arxiv.org/abs/2603.21953v1
Date: Mon, 23 Mar 2026 13:10:16 GMT
Title: You See It, They Don't: An Exploratory Study of User-to-User Variation in Instagram Comments
Abstract summary: In March 2025, Meta announced a new AI system to rank the order of the comments shown to Instagram users.<n>This paper presents a small-scale exploratory study examining whether the ranking system produces systematic differences in visible comments shown to different users.<n>We find that visible comments on news posts are less likely to vary across users than those on non-news posts.
Score: 0.3699222009113239
License: http://creativecommons.org/licenses/by/4.0/
Abstract: In March 2025, Meta announced a new AI system to rank the order of the comments shown to Instagram users. With existing research showing how feed personalization systems can lead to increased polarization, the introduction of this new system raises similar questions. This paper presents a small-scale exploratory study examining whether the ranking system produces systematic differences in visible comments shown to different users, particularly for news-related content. Using four sock-puppet accounts varying in gender and political leaning, we collect visible comments on posts from ten news and ten non-news accounts. This collection is repeated twice from two VPN locations to assess location effects. We ask 1) how many visible comments vary across different users, 2) is this variation higher for news accounts than non-news accounts, and 3) can user-attributes like gender, political leaning, and location systematically explain the observed variation. Contrary to our expectations, we find that visible comments on news posts are less likely to vary across users than those on non-news posts. Variation is better explained by account metrics like comment and follower counts than by user attributes. These findings provide an initial glimpse into personalized comment ranking on Instagram and motivate larger, more systematic audits of how comment personalization may shape online discourse. To support further research, we provide the code to collect comments and the data upon request.

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