Original Summary

I built birthdaytraffic.com to answer one question: How rare is your birthday, really?! You pick a date and it shows your rank compared to everyone else. You can also explore other birthdays (and make your own conclusions about the events that conspired nine months earlier...)<p>Over 33,000 people tried it in its first week and I&#x27;ve been deep in the birthday universe since then. Feel free to ask any questions! :)

  • 情报分类：综合情报
  • 分类依据：内容未命中明确的垂直分类规则，归入综合情报
  • 信息来源：Hacker News 新项目
  • 发布时间：2026/10/1 09:48:37