• "Une étude pour comprendre le temps de vie d’un contenu sur les différents réseaux sociaux.” English: A study to understand the lifespan of content across different social media platforms.
• “L’étude Lifespan (Half-life) of Social Media Posts, actualisée régulièrement, permet de connaître la demi-vie de différents réseaux sociaux.” English: The study Lifespan (Half-life) of Social Media Posts, regularly updated, helps identify the half-life of various social networks.
• “Découvrir l’étude." English: Discover the study. “Découvrir l’étude.” is a hyperlink. Selecting it brings readers to Scott M. Graffius’ “Lifespan (Half-Life) of Social Media Posts” research at: https://scottgraffius.com/blog/files/lifespan-halflife-of-social-media-posts-update-for-2025.html.

• Coverage of Scott M. Graffius' "Lifespan (Half-Life) of Social Media Posts" Research,
• About Scott M. Graffius,
• How to Cite This Article,
• and more.

• Bensley, Robert J., & Brookins-Fisher, Jodi (2023, December 14). Community and Public Health Education Methods: A Practical Guide—Fifth Edition. Burlington, MA: Jones & Bartlett Learning. [The authors cover Graffius’ work in Chapter 10 (Using Social Media) and list Graffius’ work as reference number 84 on page 256. A link to the publication at Google Books is here: https://bit.ly/cphem-5.]
• Berkessel, Juergen (2021, October 27). How Evergreen Posting on Social Media for Podcasters Creates Growth. Season 1, Episode 9 of the Podcasting Strategy Show. Available at: https://polymash.com/evergreen-posting. [The podcast references Graffius’ research. Show notes include Graffius’ “Lifespan (Half-Life) of Social Media Posts” visual as well as a hyperlink to Graffius’ full report.]
• BlivSetOnline (2024, November 15). Forstå vigtigheden af halveringstid på sociale medier. Available at: https://blivset.online/forstaa-vigtigheden-af-halveringstid-paa-sociale-medier.
• Buffer (2024, February 7). 9 Ways to Grow Your Following on X/Twitter. Available at: https://buffer.com/resources/get-more-followers-on-twitter-x/. [It has a hyperlink to Graffius’ research.]
• Burton, Taylor (2022, November 2). Social Media Marketing: Leveraging LinkedIn. Pennsylvania Bar Institute. Available at: https://go.pbi.org/blog/social-media-marketing-leveraging-linkedin. [In the article, “LinkedIn posts are shown to have a longer lifespan” is hyperlinked to Graffius’ research.]
• Center for Direct Marketing (2024, March 25). Best Marketing Podcasts, Lifespan of Social Media and Blog Posts. Available at: https://dmcenter.com/march-2024/. [The article references, and has a link to, Graffius’ research.]
• Center for Direct Marketing (2022, September 27). What Is the Average Lifespan of a Blog or Social Media Post? Available at: https://dmcenter.com/lifespan-of-a-post. [The article includes data from Graffius and a hyperlink to his research.]
• Chaturvedi, Saurabh (2024, September 27). How Often to Post on Social Media. Available at: https://recurpost.com/blog/how-often-to-post-on-social-media/.
• Chowdhary, Tanish (2023, March 21). 13 Best Twitter Thread Tools to Go Viral in 2023. Geekflare. Available at: https://geekflare.com/best-twitter-thread-tools. [The article includes Graffius’ “Lifespan (Half-Life) of Social Media Posts” visual and a hyperlink to Graffius’ research.]
• Confederation of European Waste-to-Energy Plants (CEWEP) (2023, June 15). The Power of Social Media and How to Use It. 10th CEWEP Waste-to-Energy Congress, 14th - 16th June 2023, Berlin. Available at: https://www.cewep.eu/congress2023presentations/ and https://www.cewep.eu/wp-content/uploads/2023/06/4.1-Monika-Michalska.pdf. [CEWEP Congress presentation slide 9 featured Graffius’ visual, representing a summary of his research findings.]
• Degraux, Xavier (2022, November 5). Quelle est la Durée d’un Post sur Twitter, Instagram, LinkedIn. Available at: https://www.xavierdegraux.be/quelle-est-la-duree-dun-post-sur-twitter-instagram-linkedin. [In his article, Xavier Degraux — a social networks and content marketing consultant based in Belgium — discussed Graffius' work and provided a hyperlink to the research. Here's the title in English: How Long is a Post on Twitter, Instagram, LinkedIn.]
• Encompass Online Marketing (2023, March 15). How Often Should You Publish New Content? Available at: https://encompassonline.ca/blog/how-often-should-you-publish-new-content. [Among other points, the article references the lifespan of tweets and has a hyperlink to Graffius’ research.]
• Fallah, Georges (2023, December 18). The Best Times to Post on Social Media. Available at: https://www.vbout.com/blog/the-best-times-to-post-on-social-media. [The article has hyperlinks to Graffius’ research.]
• Gebauer, Susanna (2022, October 25). Twitter Scheduling: How to Schedule Tweets for More Impact. Available at: https://susannagebauer.com/blog/twitter-scheduling/. [The article includes a link to Graffius' research.]
• Geyser, Werner (2023, September 20). 34 Mind-blowing Pinterest Stats for 2023. Influencer Marketing Hub. Available at: https://influencermarketinghub.com/pinterest-stats. [The article references the durations of “three months” and provides a hyperlink to Graffius’ research.]
• GoDaddy (2023, February 20). How to Do Social Media: A Guide for Small Businesses and Entrepreneurs. Available at: https://www.godaddy.com/resources/skills/how-to-do-social-media. [In discussing the lifespan of tweets, the article provides a hyperlink to Graffius’ research.]
• Gotch, Nathan (2023, December 4). How to Start an SEO Business (2024 Update). Available at: https://www.gotchseo.com/start-seo-company/. [The article includes Graffius’ “Lifespan (Half-Life) of Social Media Posts” visual and a hyperlink to Graffius’ research.]
• Hawes, C. W. (2023, January 24). Social Media Half-Life. Available at: https://www.cwhawes.com/social-media-half-life. [The article identifies Graffius’ research and has a hyperlink to it.]
• John, Vanessa (2024, September 5). Website vs. Social Media - Do You Still Need a Site in 2024? Madgicx. Available at: https://madgicx.com/blog/website-and-social-media.
• Karr, Douglas (2024, February 18). The Half-Life of Social Media Posts in 2024: Navigating Lifespan for Strategic Impact. Available at: https://martech.zone/half-life-of-a-social-media-post/.
• Lin, Yunduan, & Wang, Mengxin, & Zhang, Heng, & Zhang, Renyu, & Shen, Zuo-Jun Max (2021, June 9; revised 2023, June 28). Content Promotion for Online Content Platforms with the Diffusion Effect. SSRN. Available at: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3863104 and https://dx.doi.org/10.2139/ssrn.3863104. [The scientific paper mentions Graffius’ work, and it delineates his research in the References section.]
• Little, Trena (2024, April 1). Create a Content Calendar That's Simple and East to Implement. Video. Available at: https://www.youtube.com/watch?v=JI1muSuSVmA.
• McErlain-Naylor, Stuart (2022, March 24). Social Media for Academia - All You Need to Know [Video]. Available at: https://www.youtube.com/watch?v=Ka88MxZbU8o. [At timestamp 13:59 in the video, Dr. Stuart McErlain-Naylor displays a visual which summarizes the 2022 edition of Graffius’ research.]
• MeetEdgar (2023, April 2). Everything You Need to Know About Repeating Social Media Content. Available at: https://meetedgar.com/blog/repeating-social-media-content. [This article from social media management tool company MeetEdgar discusses the lifespan of posts and it has a hyperlink to Graffius’ research.]
• Memom, Alafiya (2023, June 14). Master the Art of Using Pinterest for Blogging in 2023. ContentStudio. Available at: https://blog.contentstudio.io/pinterest-for-blogging. [The article rounds up the half-life of Pinterest pins as “4 months” and it includes a hyperlink to Graffius’ research.]
• Metricool (2023, October 31). YouTube Marketing in 2023. Available at: https://metricool.com/youtube-marketing. [The article includes “According to Scott Graffius’s data ...” and a hyperlink to Graffius’ research.]
• Midvalley Coach / Evercoach (2023, March 10). Proven Strategies To Enroll Coaching Clients [A Detailed Guide]. Available at: https://www.evercoach.com/coaching-guides/enroll-coaching-clients/. [Where the article addresses the life span of social media, “24 minutes (Twitter) to 24 hours (LinkedIn)” links to Graffius’ research.]
• Ministère de la Culture (2025). Guide pour une Communication Numérique Responsable. Available at: https://www.culture.gouv.fr/fr/thematiques/transition-ecologique/Centre-de-ressources-Transition-ecologique-de-la-Culture/Outils-de-mesure-guides/Les-outils-Sobriete-numerique/guide-pour-une-communication-numerique-responsable.
• Patel, Neil (2023, May 23). 18 Powerful Twitter Marketing Tips [That Actually Work]. Neil Patel. Available at: https://neilpatel.com/blog/twitter-marketing-tips. [In the article, “The average lifespan of one tweet” has a hyperlink to Graffius’ research.]
• Pinterest Inc. [See: Graffius, Scott M. (2024, October 10). Pinterest Inc. References Scott M. Graffius’ Research. Available at: https://scottgraffius.com/blog/files/pinterest_inc_business_blog_features_graffius.html. DOI: 10.13140/RG.2.2.31296.55041.]
• Pinterest Inc. – Japan [See: Graffius, Scott M. (2024, December 19). Pinterest Japan Uses Graffius’ Research on Temporal Dynamics on Social Media Platforms. Available at: https://scottgraffius.com/blog/files/pinterest-japan-uses-research-by-graffius.html. DOI: 10.13140/RG.2.2.35455.93606.]
• Pitzalis, Josh (2022, November 21). Finding Social Media Calendar Ideas for Twitter. Chirr App. Available at: https://getchirrapp.com/how-to/find. [The article references the half-life of a tweet and has a hyperlink to Graffius’ research.]
• Pugalia, Akash, & Lalani, Farah (2023, September 29). Digital Safety: How a Multi-Faceted Approach Can Help Tackle Real-World Harm. World Economic Forum. Available at: https://www.weforum.org/agenda/2023/09/digital-safety-multi-faceted-approach-tackle-real-world-harm. [The Proceedings of the National Academy of Sciences (PNAS) included data by Graffius on the half-life of social media. The World Economic Forum covered that PNAS study in their article.]
• Rainey, Clint (2023, August 15). Social Media’s Toxic Impact Can Last Up to 8 Days. This Behavioral Scientist’s Solution Might Surprise You. Available at: https://www.fastcompany.com/90939081/social-media-toxic-impact-content-moderation-solution-behavior-science. [The Proceedings of the National Academy of Sciences (PNAS) included Graffius’ research data on the half-life of social media. Fast Company covered that PNAS publication — and summarized Graffius’ data from it — in their article.]
• Rynek Pro (2023, June 26). Długość Życia Postów (Half-Life) w Mediach Społecznościowych w 2023 Roku. Available at: https://rynek.pro/half-life-dlugosc-zycia-postow/#pll_switcher. [Rynek Pro, a Poland-based advertising agency, featured Graffius’ research in their article. Here’s the title in English: Life Expectancy of Posts (Half-Life) in Social Media in 2023.]
• Sallaway Paul (2024, June 1). Using Social Media The Right Way! Available at: https://mivision.com.au/2024/06/using-social-media-the-right-way/.
• Schaffer, Neal (2024, September 17). Maximizing LinkedIn for Business Growth: A Practical Guide to Building Your Brand and Driving Results. Irvine, California. PDCA Social.
• Schneider, Philipp J., & Rizoiu, Marian-Andrei (2023, August 22). The Effectiveness of Moderating Harmful Online Content. Proceedings of the National Academy of Sciences of the United States of America, 120 (34): e2307360120. Available at: https://www.pnas.org/doi/abs/10.1073/pnas.2307360120. DOI: 10.1073/pnas.2307360120. [The scientific paper references Graffius’ “Lifespan (Half-Life) of Social Media Posts” research and uses his data.]
• Small Business Development Center (2024, September 30). 10 Marketing Strategies to Grow Your Small Business [Video]. YouTube. Available at: https://www.youtube.com/watch?v=WelVAmXuxPU&t=1181s.
• Social Selling CRM (2024). Demi-vie de Vos Publications: Stratégies d’Optimisation 2024.’ (In English: Half-life of Your Publications: 2024 Optimization Strategies). Available at: https://www.socialsellingcrm.com/demi-vie-de-vos-publications-strategies-doptimisation-2024/.
• Statler, Jacob (2024, September 12). How to Schedule Social Media Posts: Best Tools and Tips. Post Planner. Available at: https://www.postplanner.com/blog/how-to-schedule-social-media-posts/. ["The lifespan of a social media post" — in green text, located towards the end of the article — links to Graffius’ research.]
• Strozyk, Kaylee (2023, November 3). 11 Tips on How to Use Pinterest for Real Estate. Fit Small Business. Available at: https://fitsmallbusiness.com/how-to-use-pinterest-for-real-estate-agents. [The article references that the half-life of Pinterest pins is “about 3.75 months.” Selecting the respective hyperlink brings up Graffius’ research.]
• Thailand TV News (2022, August 16). Half-Life of Each Social Media Post. Available at: https://thailandtv.news/half-life-of-each-social-media-post-thumbsup. [The article incorporates data from Graffius’ work, and it has a hyperlink to his research.]
• The Tech Reps (2023, January 23). SEO or Social Media Marketing, Which is Better for Sales? [video]. Available at: https://www.youtube.com/watch? v=aVmQdHDXCrw. [The Tech Reps used Graffius’ “Lifespan (Half-Life) of Social Media Posts” visual as the background image in their video.]
• Two Rivers Marketing (2020, December 9). 8 Social Media Channels and Tactics to Consider Adding to Your Marketing Mix. Available at: https://www.tworiversmarketing.com/blog/8- social-media-channels-and-tactics-to- consider-adding-to-your-marketing-mix. [The article references the lifespan of posts and has a hyperlink to Graffius’ research.] Walters, Christy (2023, May 4). How To Curate Content for LinkedIn: Handpick Your Next Post. CopyPress. Available at: https://www.copypress.com/kb/social- media-promotion/curate-content-for-linkedin. [The article discusses the lifespan of a LinkedIn post and has a hyperlink to Graffius’ research.]
• What What SEO (2024, September 5). 5 bonnes raisons de créer un compte Pinterest si tu es entrepreneuse. (In English: 5 good reasons to create a Pinterest account if you are an entrepreneur.) Available at: https://whatwhatseo.fr/creer-compte- pinterest-entreprise-avantages/. [The article incorporates Graffius’ research; to see the details, select 'Sources' located towards the end of the article.]
• And many more.

• Agile Scrum: Your Quick Start Guide with Step-by-Step Instructions, his first book, earned 17 awards.
• Agile Transformation: A Brief Story of How an Entertainment Company Developed New Capabilities and Unlocked Business Agility to Thrive in an Era of Rapid Change, his second book, was named one of the best Scrum books of all time by BookAuthority.
• Agile Protocol: The Transformation Ultimatum, his third book and his first work of fiction, was released in April 2025. The book trailer is on YouTube.

• Adobe,
• American Management Association,
• Amsterdam Public Health Research Institute,
• Bayer,
• BMC Software,
• Boston University,
• Broadcom,
• Cisco,
• Coburg University of Applied Sciences and Arts - Germany,
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• Data Governance Success,
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• DevOps Institute,
• Dropbox,
• EU's European Commission,
• Ford Motor Company,
• Gartner,
• GoDaddy,
• Harvard Medical School,
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• IEEE,
• Innovation Project Management,
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• Journal of Neurosurgery,
• Lam Research (Semiconductors),
• Leadership Worthy,
• Life Sciences Trainers and Educators Network,
• London South Bank University,
• Microsoft,
• NASSCOM,
• National Academy of Sciences,
• New Zealand Government,
• Oracle,
• Pinterest Inc.,
• Project Management Institute,
• Mary Raum (Professor of National Security Affairs, United States Naval War College),
• SANS Institute,
• SBG Neumark - Germany,
• Singapore Institute of Technology,
• Torrens University - Australia,
• TBS Switzerland,
• Tufts University,
• UC San Diego,
• UK Sports Institute,
• University of Galway - Ireland,
• US Department of Energy,
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• US Soccer,
• US Tennis Association,
• Verizon,
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• and many others.

• Practice Standard for Work Breakdown Structures—Second Edition.
• A Guide to the Project Management Body of Knowledge—Sixth Edition.
• The Standard for Program Management—Fourth Edition.
• The Practice Standard for Project Estimating—Second Edition.

• Certified SAFe 6 Agilist (SA),
• Certified Scrum Professional - ScrumMaster (CSP-SM),
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• Certified ScrumMaster (CSM),
• Certified Scrum Product Owner (CSPO),
• Project Management Professional (PMP),
• Lean Six Sigma Green Belt (LSSGB), and
• IT Service Management Foundation (ITIL).

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