Social media algorithmic influenceAtlas

Timeline

1. 2006 · eventNews-feed style ranking becomes central to social platforms
2. 2009 · eventMajor platforms scaled engagement signals such as likes into core ranking inputs
3. 2012 · popularizationEdgeRank-style feed ranking entered mainstream product and critic vocabulary
4. 2012 · first_appearancePublic critiques of algorithmic amplification enter mainstream tech politics
5. 2014 · document_releaseFacebook published the emotional-contagion news-feed experiment
6. 2016 · popularizationElection-year debates elevate filter-bubble and manipulation claims
7. 2016 · amplificationTrending-topics and filter-bubble controversies surged around U.S. and other elections
8. 2018 · investigationCambridge Analytica fallout drove hearings on data-driven targeting and feed influence
9. 2018 · amplificationResearch and journalism waves popularized YouTube recommendation radicalization claims
10. 2018-04 · eventMark Zuckerberg testified before U.S. Congress on platform power and content systems
11. 2020 · amplificationPandemic and election periods intensified disputes over ranking of health and political content
12. 2021 · investigationWhistleblower and consortium research waves intensify design-harm disputes
13. 2021-09 · document_releaseFacebook Papers / whistleblower disclosures publicized internal engagement-harm research
14. 2021-09 · amplificationLarge-scale platform research publications become reference points
15. 2021-10 · investigationFrances Haugen testified to lawmakers on algorithmic amplification and youth safety
16. 2022 · eventEU Digital Services Act established systemic-risk duties for very large online platforms
17. 2022 · document_releaseTwitter Files releases revived arguments over visibility filtering and ranking interventions
18. 2023 · investigationU.S. hearings and state actions expanded focus on TikTok recommenders and youth design harms
19. 2023 · mutationYouth addiction and design-harm lawsuits against Meta broadened beyond pure speech claims
20. 2024 · investigationEuropean Commission pressed Meta over addictive design and youth-protection obligations
21. 2024 · amplificationShort-video recommender steering became the dominant public frame for algorithmic influence
22. 2024 · mutationShort-video recommenders become the new center of steering arguments
23. 2025 · document_releaseNew systematic reviews synthesized algorithmic effects on news production and legitimacy