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Substack’s new Reply Rules feature lets creators control how people respond

Substack’s new Reply Rules feature lets creators control how people respond

đź’Ą Discover this must-read post from TechCrunch đź“– đź“‚ **Category**: Apps,content moderation,Substack đź’ˇ **What You’ll Learn**: Substack on Wednesday announced a new feature called “Response Rules,” designed to give creators greater control over how their audiences are able to respond. With this feature, creators can create specific guidelines for comments on their posts, in notes, or in chat. These guidelines may include requests to remove profanity or profanity used by the AI, or anything as silly as requesting responses only in the form of haiku. Substack explains that the system learns from users' actions, such as when they hide replies,…
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I built a vulnerable app and spent $1,500 seeing if LLMs could hack it

I built a vulnerable app and spent $1,500 seeing if LLMs could hack it

✨ Explore this must-read post from Hacker News đź“– đź“‚ **Category**: âś… **What You’ll Learn**: As a part of my work I do security research for various apps and websites. I wanted to see if LLMs could reproduce a common class of exploits I’ve found in multiple apps. I made a fake React Native app in Expo and a backend in Python. It’s a book review app and the goal is to find a flag in a user’s private reviews. If you would like to try solving it yourself before I spoil it, here’s a ZIP of the APK and…
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Rapid Trade FirstClub doubles its value to $255 million in nine months

Rapid Trade FirstClub doubles its value to $255 million in nine months

✨ Read this insightful post from TechCrunch đź“– đź“‚ **Category**: Startups,Commerce,Exclusive,Sofina,Peak XV Partners,FirstClub âś… **What You’ll Learn**: In a speed-obsessed commerce market, Indian startup FirstClub has convinced investors that quality could be a new opportunity, helping to double its valuation just nine months after its latest funding round. The Bengaluru-based startup has raised $55 million in a Series B round co-led by Peak XV Partners and Sofina, valuing the company at $255 million after the investment. That's up from $120 million when it last raised capital in September 2025. Existing investors Accel, RTP Global and Paramark Ventures also participated. The…
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Panzerschrek/U-00DC-Sprache: “Ăś” programming language · GitHub

Panzerschrek/U-00DC-Sprache: “Ăś” programming language · GitHub

🚀 Explore this awesome post from Hacker News đź“– đź“‚ **Category**: đź’ˇ **What You’ll Learn**: The Ăś programming language Ăś is a statically-typed compiled programming language, designed for writing programs, which should be both reliable and fast. It has safe and unsafe code separation, compile-time correctness checks, powerful abstractions like RAII and templates, encapsulation, rich type system, lambdas, coroutines and many other useful features. Ăś uses RAII for memory and resources management (no GC is involved), but manual memory management may be still used in unsafe code. Ăś is memory-safe and race-condition-safe, as long as no unsafe code is involved…
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The source says beloved brands have been leveraging Google Cloud over the years to increase usage 5x

The source says beloved brands have been leveraging Google Cloud over the years to increase usage 5x

🚀 Check out this trending post from TechCrunch đź“– đź“‚ **Category**: AI,Startups,Anthropic,google cloud,Lovable âś… **What You’ll Learn**: Lovable and Google announced an expanded multi-year collaboration on Wednesday. Lovable, a fast-growing biocoding startup in Stockholm, has been a long-time user of Google Cloud. Under the new agreement, it will be much bigger. While the companies did not disclose a dollar figure, a person familiar with the deal told TechCrunch that it includes a five-fold increase in Lovable's footprint on Google Cloud, including the use of artificial intelligence. This person tells us that as part of the deal, Lovable will get expanded…
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Journey to JPEG XL: How open source experiments shaped the future of image coding

Journey to JPEG XL: How open source experiments shaped the future of image coding

✨ Read this awesome post from Hacker News đź“– đź“‚ **Category**: 📌 **What You’ll Learn**: by Jyrki Alakuijala, Zoltán Szabadka & Luca Versari, Paradigms of Intelligence, Google Technology & Society Building the Next Generation Image Standard The internet runs on images. Since the early days of the web, there has been a relentless tension between visual fidelity and bandwidth. For decades, the industry relied on the venerable JPEG standard for images loading fast. It served us remarkably well, but as displays moved to High Dynamic Range (HDR) and Wide Color Gamut (WCG), the format began to show its limits. The…
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French Open 2026 results: Matteo Berrettini is “tired of retirement” after the injury that ended the hopes of Roland Garros

French Open 2026 results: Matteo Berrettini is “tired of retirement” after the injury that ended the hopes of Roland Garros

🔥 Explore this trending post from BBC Sport đź“– đź“‚ **Category**: 📌 **What You’ll Learn**: Berrettini's only previous retirement from a Grand Slam match was at the 2023 US Open.He also made an early exit from the 2021 ATP Tour Finals due to an abdominal injury, while last season he was forced to withdraw midway through matches in Madrid and Rome in the lead-up to the French Open.But the former world number six, who missed the previous four French Open tournaments due to injury problems, is determined to take the positives from reaching the Grand Slam quarter-finals for the seventh…
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Literary Hub » The Man Who Reads Books For a Living (One Every Two Days)

Literary Hub » The Man Who Reads Books For a Living (One Every Two Days)

✨ Check out this awesome post from Hacker News đź“– đź“‚ **Category**: đź’ˇ **What You’ll Learn**: When Clarke Speicher (spike-er) asked how I liked the screen adaptation of Train Dreams, Denis Johnson’s novella following the solitary logger Robert Granier in the early 20th-century American West, he was actually asking whether it measured up to its source material. That is, after all, the question about adaptations. Still, it felt loaded. If it had been anyone else, I would’ve felt at liberty to prattle without worrying whether I’d arrived at any kind of thesis. That I love the book was beside the…
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Meta has taken out the VR fitness game Supernatural instead of just killing it

Meta has taken out the VR fitness game Supernatural instead of just killing it

✨ Read this awesome post from TechCrunch đź“– đź“‚ **Category**: Gaming,Hardware,fitness,Meta,supernatural,VR 📌 **What You’ll Learn**: Meta's attempt to pioneer the metaverse and make VR cool has failed, except for one shining diamond: Supernatural, a VR fitness game that made working out fun and accessible. Now, users can rejoice that Supernatural isn't shutting down after all. Meta went through the hassle of fighting an antitrust battle for eight months so it could acquire the game studio Inside, which made Supernatural, in 2023. The deal was reportedly worth about $400 million, plus the cost of fighting and winning an FTC lawsuit. However,…
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zaydmulani09/mnemo: Local-first AI memory layer for any LLM. Persistent knowledge graph, entity extraction, semantic retrieval. Works with Ollama, OpenAI, Anthropic, or any OpenAI-compatible backend. · GitHub

zaydmulani09/mnemo: Local-first AI memory layer for any LLM. Persistent knowledge graph, entity extraction, semantic retrieval. Works with Ollama, OpenAI, Anthropic, or any OpenAI-compatible backend. · GitHub

🔥 Read this must-read post from Hacker News đź“– đź“‚ **Category**: âś… **What You’ll Learn**: Local-first AI memory layer for any LLM. Persistent knowledge graph, entity extraction, semantic retrieval — no cloud required. Most LLMs forget everything the moment a conversation ends. mnemo fixes that. mnemo is a sidecar service that watches every conversation you feed it, extracts named entities and relationships using an LLM, builds a persistent knowledge graph in SQLite, and injects relevant context back into future prompts — automatically, in under 50ms. It works with Ollama (fully local, free), OpenAI, Anthropic, or any OpenAI-compatible API. It ships…
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