gritty
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Weekly roundup of the latest Prompt Injection attack techniques and reusable defense prompt templates from X, security blogs, and papers
从 Twitter 挖掘高频 App 需求
电商平台 AI 硬件品类销量趋势分析
量子位公众号的新产品介绍文章
Each week, scrape new personal blog posts / essays / shareholder letters by Silicon Valley founders, and distill insights immediately applicable to startup decisions
每日扫描 eBay / Mercari / Vinted / Depop / BrickLink 上 24 小时内新上架的绝版乐高套装，按稀缺度 + 折扣力度排序，含真伪鉴定要点
每天汇总全球各国海关公开发布的截获违禁品公告（活体动物 / 文物 / 黄金 / 珍稀植物 / 假钞 / 假货），按猎奇程度排序，附走私手法分析
主流云服务商价格变动与免费额度追踪
Weekly scan of newly incorporated AI application-layer companies worldwide, newly disclosed funding rounds, and new entrants, including founder backgrounds and capital sources
每周挑选 3 个本周宣布失败 / 退款 / 关停的创业项目，深度拆解失败原因——产品错配 / 团队内斗 / 烧钱过快 / 监管被卡 / 时机太早
Weekly roundup of the latest Prompt Injection attack techniques and reusable defense prompt templates from X, security blogs, and papers
Weekly scan of newly incorporated AI application-layer companies worldwide, newly disclosed funding rounds, and new entrants, including founder backgrounds and capital sources
电商平台 AI 硬件品类销量趋势分析
主流云服务商价格变动与免费额度追踪
Each week, scrape new personal blog posts / essays / shareholder letters by Silicon Valley founders, and distill insights immediately applicable to startup decisions
Screen the entire US equity universe by three hard criteria—trailing 3-year ROE sustained above 15%, positive free cash flow, and reasonable valuation—and surface one stock per day
每周挑选 3 个本周宣布失败 / 退款 / 关停的创业项目，深度拆解失败原因——产品错配 / 团队内斗 / 烧钱过快 / 监管被卡 / 时机太早
量子位公众号的新产品介绍文章
从 Twitter 挖掘高频 App 需求
每日扫描 eBay / Mercari / Vinted / Depop / BrickLink 上 24 小时内新上架的绝版乐高套装，按稀缺度 + 折扣力度排序，含真伪鉴定要点