Effects of short-form videos 🧠, proof of humanity šŸ‘‹, new rules of growth šŸ“ˆ

Heavy short-form video use may impair attention and memory. A meta-analysis of about 70 studies found stronger links to cognitive problems ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌  ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ ‌ 

TLDR

Together With Wistia

TLDR Marketing 2026-09-15

How to tell if your webinar numbers are actually good (Sponsor)

Stop using vibes to analyze your webinar performance. Based on data from 900+ marketers (and every webinar hosted on Wistia in 2025), this (ungated) industry benchmark provides the objective data you need for fact-driven analytics. 

That means:

  • Average live attendance benchmark so you know what counts as a strong number vs. one that needs fixing.
  • How long webinar content keeps generating plays after the live event (a third are still getting views three months out).
  • How top marketers repurpose recordings into blog posts, social clips, and email (nearly 90% do this).

Get the (ungated) benchmark

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News & Trends

The harms of short-form video on the brain are starting to show (5 minute read)

Heavy short-form video use may impair attention and memory. A meta-analysis of about 70 studies found stronger links to cognitive problems than mental health issues, with compulsive use predicting worse outcomes. Other research links more phone time to poorer working memory and uncontrolled short-form use to weaker episodic memory. Memory and imagination share neural circuitry, so these effects could also make it harder to envision and plan for the future.
Has mainstream culture disappeared? New YouTube trends research says no (3 minute read)

Mainstream culture isn't disappearing, but brands can no longer rely on celebrities or broad media to create cultural relevance. YouTube creators and memes are now seen as widely known as Hollywood stars. Cultural momentum often starts in niche online communities before spreading through sharing and creating. YouTube says the platform can turn that momentum into broader cultural validation, with 65% of respondents saying something feels more real or legitimate when they see it there.
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Strategies & Tactics

"Proof of humanity" is the biggest marketing opportunity right now (3 minute read)

66% of people under 30 already react negatively when a business visibly uses AI in its ads, a reversal for the generation assumed to be AI's biggest fans. That backlash is turning restraint itself into a content opportunity, since publicly declaring what a brand won't automate can work as marketing in its own right, not just a compliance footnote. Aerie's pledge to skip AI-generated models became its most-liked Instagram post ever, with a 23% sales bump the same quarter.
Are We Building Brands for a World That No Longer Exists? (5 minute read)

Brands still rely on growth tactics built for a simpler, more stable world. This piece argues for a “both/and” approach. Keep evidence-based marketing principles while accounting for trust, context, and long-term consequences. Set rules against manipulative tactics. Use brand touchpoints to explain real-world decisions. Dedicate 10% of activity to retention, employee pride, and referrals.
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Resources & Tools

šŸ“Š How often do ads show up in AI conversations? (Sponsor)

Your organic AI visibility data already shows which conversations your brand is missing. That's a paid targeting list. On September 23, Evertune breaks down who's buying ads in AI conversations, where the whitespace still sits, and why GEO-informed campaigns outperform the ones that aren't. Save your seat
The New Rules of Growth (Webinar)

High-growth marketing teams are changing how they hire and allocate resources as growth demands rise. On September 17, Krithika Shankarraman of Thrive Capital and Christy Roach of AirOps will share how they secure resources, measure newer channels like AI Search, and get more leverage from smaller teams as growth accelerates.
What It Actually Takes to Win on Reddit (Webinar)

This session, on September 22, explores how brands can build a meaningful presence on Reddit. It covers subreddit culture, moderator relationships, and community engagement. Rachel Duffy shares how The Times built its Reddit strategy and drove visibility and trust. The session also looks at Reddit's role as search and LLMs reshape audience behavior.
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Miscellaneous

Does Retail Media Add Value? (2 minute read)

Retail media only adds value when ads drive profitable incremental sales. For advertisers, high ROAS can be misleading if shoppers would have purchased anyway. Retailers can also hurt margins if ads displace organic conversions or degrade the shopping experience. Both sides should measure whether advertising changes outcomes.
Are you doing marketing…or building software? (7 minute read)

95% of enterprise GenAI projects show zero return. The biggest gap is in areas with strong off-the-shelf options, such as rank tracking, citation monitoring, and content scoring. Vendors serving thousands of customers have already solved these integration challenges. Custom workflows are harder to outsource, but buying proven expertise can still beat learning through trial and error.

Quick Links

3 in 4 Americans use phones while watching TV (2 minute read)

Broadcasters and advertisers now plan for TV and mobile as one viewing environment.
How to actually do a braindump (1 minute read)

A 5-step process to quickly organize tasks, decisions, and ideas.

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Thanks for reading,
Alison Koh & Maddi Salmon


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