Observed Signal · Sep 29, 2026 · Market Signal · Source: Linktree · Impact: 2/5
Linktree launches new and improved YouTube features to help creators build more direct connections with their audiences
Linktree's new tools for YouTube creators make it easier to connect directly with viewers, keep video content current, and personalize what audiences see next.
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Spellbook of Prompt: Rebrand and Open-Source Prompt Library
A developer has reworked and relaunched a curated prompt collection formerly called Daily Prompt under the new name Spellbook of Prompt. The project is open-source (MIT) and available on GitHub, with live documentation hosted on Netlify. The collection reorganizes prompts by use case (content, code, data, writing, design, learning), includes descriptions, examples, and edge-case notes, and is validated across multiple LLMs (the author tests prompts on at least two different models). The docs are built with Astro and Starlight (MDX-ready) and the roadmap includes interactive examples, tagging for LLM compatibility, improved search, and more developer-focused prompts. Contributions via PRs are encouraged.
Cannes Lions 2026 Day 3: Panels, Parties and Activations
Adweek’s Day 3 gallery from Cannes Lions 2026 highlights festival activations, panels and networking across ADWEEK House, brand spaces and sponsor lounges. Panels covered AI and creativity — including Google DeepMind CEO Demis Hassabis on AI-enabled storytelling and a LinkedIn rooftop discussion titled “Winning in the AI Discovery Era” — while sports programming featured guests such as Maria Sharapova, Chris Paul and Jaylen Brown. Brand activations included Linktree’s L’Appartement, Snap’s AR Studio and Snap Spectacles, LiveRamp and IRCode’s yacht party, and agency celebrations including VML’s Grand Prix win and Circus Grey & Lima’s Ethical Data & Privacy Innovation Grand Prix. The gallery is a visual roundup of Day 3’s people, panels and experiential marketing moments from the festival.
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