1/ New in HKS Misinformation Review: as platforms turn to Community Notes, what do fact-checkers themselves think? We interviewed 29 fact-checkers across 41 countries. w/ @mmosleh.bsky.social & @helenmargetts.bsky.social 📄 misinforeview.hks.harvard.edu/article/fact...

Fact-checking at a crossroads: Fact checkers’ perspectives on Community Notes, AI integration, and design recommendations | HKS Misinformation Review

Social media platforms are increasingly using community-based verification systems, such as Community Notes, and AI systems to flag and contextualize potentially misleading content at scale. While the...

misinforeview.hks.harvard.edu

Excited to be organising a workshop at #GlobalFact2026 in Vilnius with @mmosleh.bsky.social, Naomi Miyashita, and Joseph Aylett-Bullock supported by the @oxpolicyengaged.bsky.social Seed Fund.

Grok fact-checks our paper on Grok fact-checking - and it approves!

David Rand@dgrand.bsky.social · 6mo ago

🚨New WP "@Grok is this true?" We analyze 1.6M factcheck requests on X (grok & Perplexity) 📌Usage is polarized, Grok users more likely to be Reps 📌BUT Rep posts rated as false more often—even by Grok 📌Bot agreement with factchecks is OK but not great; APIs match fact-checkers osf.io/preprints/ps...

🚨New WP "@Grok is this true?" We analyze 1.6M factcheck requests on X (grok & Perplexity) 📌Usage is polarized, Grok users more likely to be Reps 📌BUT Rep posts rated as false more often—even by Grok 📌Bot agreement with factchecks is OK but not great; APIs match fact-checkers osf.io/preprints/ps...

In a new working paper, @thomasrenault.bsky.social, @mmosleh.bsky.social & @dgrand.bsky.social break down how Grok is being used to fact-check, and on whom. osf.io/preprints/ps...

New on @indicator.media: "@grok is this true" was the single most frequent reply tagging X's AI chatbot in the six months following its launch.

@Grok is this true: How X’s chatbot performs as a fact-checking tool

New research explores whether the chatbot might replace the crowdsourced fact-checking program – and what that might mean for getting to the truth on X

indicator.media

The workshop, organised by the OII's Dr @mmosleh.bsky.social, Dylan Thurgood and Manuel Tonneau, featured keynotes, lightning/research talks, and a policy session. Huge thanks to our organisers, the attendees, and our fantastic session chairs for making the event such a success!

50 researchers from across Europe and North America recently came to University of Oxford for a two-day workshop at St Anne's College, University of Oxford, exploring the future of social media research.

Amazing new paper analysed 10 million news posts on 7 social media platforms in January 2024 - they found that most content posted is high quality and politically moderate, including on Twitter/X. The problem is that engagement is much higher for the relatively small portion of low quality content.

🚨Out in PNAS🚨 Examining news on 7 platforms: 1)Right-leaning platforms=lower quality news 2)Echo-platforms: Right-leaning news gets more engagement on right-leaning platforms, vice-versa for left-leaning 3)Low-quality news gets more engagement EVERYWHERE - even BlueSky! www.pnas.org/doi/10.1073/...

A joy of later life studies @lsepbs.bsky.social is the dept. lectures @mmosleh.bsky.social on news quality & political bias on social media was excellent. www.pnas.org/doi/epdf/10.... - x is slightly liberal leaning😱 Crap news travels fast on the right. @t0nyyates.bsky.social have you seen this?

"While high-quality content is posted more and receives more total engagement across platforms...a given author attracts higher levels of engagement when they post lower-quality content" "pattern we find seems to be driven more by an underperformance of particularly popular high-quality outlets"

Divergent patterns of engagement with partisan and low-quality news across seven social media platforms | PNAS

In recent years, social media has become increasingly fragmented, as platforms evolve and new alternatives emerge. Yet most research studies a sing...

pnas.org

Now in PNAS! With @mmosleh.bsky.social and @dgrand.bsky.social Examining news engagement across 7 platforms, we find: - differences WRT political lean ("echo platforms") - similarities WRT news quality (posting low qual news => more engagement) Read paper and thread for more!

David Rand@dgrand.bsky.social · 2y ago

🚨New WP🚨 We examine news sharing on 7 platforms: 1)Right-leaning platforms=lower quality news 2)Echo-platforms: Right-leaning news gets more engagement on right-leaning platforms, vice-versa for left-leaning 3)But low-quality news gets more engagement EVERYWHERE, even BlueSky! osf.io/preprints/ps...

New! Great piece by Tech and Science Post highlighting new research study examining partisan news sharing on social media platforms, lead author Dr @mmosleh.bsky.social, @oii.ox.ac.uk, co-authors Jennifer Allen and @dgrand.bsky.social. 1/2 techandsciencepost.com/news/other-s...

Low-quality news links draw higher engagement, no matter the political slant online - Tech and Science Post

The spread of dubious headlines on social media isn’t just a right-wing thing—it’s a social media thing, according to new research from Cornell. After studying millions of social media posts containin...

techandsciencepost.com

NEW: In a recent Oxford-led study by @mmosleh.bsky.social, researchers analysed millions of social media posts containing links to news stories, across seven different social platforms. Read the full research paper here: www.pnas.org/doi/10.1073/...

According to @mmosleh.bsky.social and colleagues, information integrity can learn from the threat intelligence practices routinely utilized in cybersecurity. Read the full @weforum.org piece here: www.weforum.org/stories/2025...

Why cybersecurity and information integrity are two sides of the same coin

With cybercriminals increasingly employing both cybersecurity and information-integrity-related threats, both disciplines are now integrally linked.

weforum.org

So many interesting findings in this work from @mmosleh.bsky.social and @dgrand.bsky.social comparing news sharing and engagement by quality and partisanship across 7 platforms Notable partisan asymmetries. Low quality news gets more engagement, driven by traditional news getting poor engagement

🚨 New preprint alert: We show that web-browsing GPT and LLaMA models can infer social media user demographics with reasonable accuracy—using only usernames. This opens new possibilities for social media research in the post-API era but raises important privacy concerns.

New research! Experts from @oii.ox.ac.uk and @mitsloan.bsky.social explore how friends of friends become friends on social media platform X in new research published in @pnas.org. 1/4

Wolfson GBF Prof @mmosleh.bsky.social has co-authored a study revealing that posts made by Republican users on X are more than twice as likely to be flagged for misinformation than those by Democrats. Read more at our website: www.wolfson.ox.ac.uk/news/misinfo...

Republican Tweets More Likely to be Flagged for Misinformation

New study by Wolfson Fellow finds Republicans’ posts are flagged twice as often as Democrats for misinformation on X’s Community Notes.

wolfson.ox.ac.uk

🚨In PNAS🚨 The right often accuses fact-checkers of political bias But we analyzed Community Notes on Musk's X and found posts flagged as "misleading" are 2.3x more likely to be written by Reps than Dems! The issue is Reps sharing misinformation, not fact-checker bias... www.pnas.org/doi/10.1073/...

🚨 New in PNAS 🚨 Posts by Republicans are 2.3 times more likely to be flagged as misleading than those by Democrats on X's Community Notes. A 🧵 pnas.org/doi/epub/10.... (Open Access)

In case you missed it, OII Prof @mmosleh.bsky.social has authored an expert comment piece for @ox.ac.uk on his recent research on how to increase engagement with factchecking. Read it here: www.ox.ac.uk/news/2025-04...

Expert Comment: How can we encourage engagement with online

Dr Mohsen Mosleh, Associate Professor in Social Data Science at Oxford Internet Institute, explores the role of shared ideology and social connection in whether people engage with fact-checks that

ox.ac.uk

University of Oxford@ox.ac.uk · last yr.

'People were significantly more likely to reply to or otherwise engage with a correction when the corrector had interacted with them beforehand.' Read more from @oii.ox.ac.uk's Dr Mohsen Mosleh ⬇️

New! In his latest opinion piece, Associate Professor, @mmosleh.bsky.social @oii.ox.ac.uk asks how we can encourage engagement with online fact-checking? Read the full article: www.oii.ox.ac.uk/news-events/...

OII | Expert Comment: How can we encourage engagement with online fact-checking

In his latest opinion piece, Dr Mohsen Mosleh explores the role of shared ideology and social connection as influencing factors in fact-checking and countering online misinformation.

oii.ox.ac.uk

An exploration of the increasingly muddy waters of online fact-checking - a fascinating read from Wolfson GBF @mmosleh.bsky.social as he examines the role of shared ideology and social connection in whether people engage with fact-checks that aim to counter online misinformation.

Oxford Internet Institute@oii.ox.ac.uk · last yr.

New! In his latest opinion piece, Associate Professor, @mmosleh.bsky.social @oii.ox.ac.uk asks how we can encourage engagement with online fact-checking? Read the full article: www.oii.ox.ac.uk/news-events/...

🚨New in @plosone.org🚨 Corrections of misinfo are often ignored. What can drive engagement? Twitter field exp & survey followups find -Social ties matter: users more likely to engage w corrections from accounts who followed user -Shared partisanship had smaller effects on engagement shorturl.at/0Ycdp

Read the full study ‘Promoting engagement with social fact-checks online: investigating the roles of social connection and shared partnership’, authors @cameronmartel.bsky.social . @mmosleh.bsky.social , @eckles.bsky.social and @dgrand.bsky.social. Download here: bit.ly/4iR4HbO

Promoting engagement with social fact-checks online: Investigating the roles of social connection and shared partisanship

Social corrections – where users correct each other – can help rectify inaccurate beliefs. However, social corrections are often ignored. Here we ask under what conditions social corrections promote e...

bit.ly

In the latest episode of the OII podcast, we're tackling misinformation and polarization on social media. What's the real-world impact? How are governments responding? And what about AI and deepfakes? Listen here: podcasts.ox.ac.uk/why-social-m...

Why social media is the new frontier for misinformation, and what we can do about it: Professor Mohsen Mosleh and Cameron Martel

In the sixth episode of the OII Podcast, our experts discuss topics such as: * The real world impacts that arise when people increasingly identify with their political tribes online * What role govern...

podcasts.ox.ac.uk

📈Out today in @PNASNews!📈 In a large pre-registered experiment (n=25,982), we find evidence that scaling the size of LLMs yields sharply diminishing persuasive returns for static political messages.  🧵:

🚨New WP🚨 Remember Musk+Zuck+Trump+Jordan etc crying fact-checker bias b/c Reps were flagged more than Dems? We analyzed Community Notes on Musk's X and guess what: posts flagged as "misleading" are 67% more likely to be written by Reps! The issue is Reps, not fact-checkers... osf.io/preprints/ps...