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    Robb Knight

    rknight.me · Personal blog · on HN since 2021

    Robb Knight writes about personal websites, RSS, bots, nginx, macOS fixes, and small apps like TrackerZapper.

    Visit blogRSSHN submissions
    Web DevelopmentPrivacy & PolicyAI & Machine Learning
    What HN says

    HN commenters cite his finding that Perplexity misstates its user agent, which sparked debate, and link his posts on styling RSS feeds.

    Stats for nerds
    17HN people shared it
    20linked in comments
    929story points
    Jun 2025last shared
    2021people per year2025

    Top posts on HN

    1. 1
      Perplexity AI is lying about their user agent
      2 people · 626 points · first shared 2024 · 533 comments on HN
    2. 2
      The Web Is Fantastic
      1 person · 141 points · first shared 2023 · 24 comments on HN
    3. 3
      Thinking about recipe formats more than anyone should
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    4. 4
      Please, Expose Your RSS
      2 people · 10 points · first shared 2023 · Discussion on HN
    5. 5
      I'm (Not) Building a Podcast Host
      1 person · 2 points · first shared 2023 · Discussion on HN
    6. 6
      Everybody's Free (To Make Websites)
      1 person · 2 points · first shared 2024 · Discussion on HN
    7. 7
      Everything Should Have an API: I'm Done with Closed Services
      1 person · 2 points · first shared 2023 · Discussion on HN
    8. 8
      Highlighting Journalism with the Fediverse Creator Tag
      1 person · 2 points · first shared 2024 · Discussion on HN
    9. 9
      Fix for Slow Open and Save Dialog on macOS
      1 person · 2 points · first shared 2025 · Discussion on HN
    10. 10
      Using Eleventy to Gobble Up Everything I Do Online
      1 person · 2 points · first shared 2024 · Discussion on HN

    What HN people wrote when they linked it

    • briantakitaJun 2024

      > What is this post about https://rknight.me/blog/blocking-bots-with-nginx/

      He is asking Perplexity to summarize a single page. This is simply automation for opening a browser, navigating to that URL, copying the content, pasteing the content into Perplexity.

      This is not automated crawling or indexing. Since the person is driving the action. An automated crawler is driven into action by a bot.

      Nor is this article added into the foundational model. It's simply in a person's session context.

      If for some reason, the community deems this as automated crawling or indexing. One could write an extension to automate the process of copying the article content & pasting the content into an LLM/Rag like Perplexity.

    • ceejayozJul 2024

      AI scrapers are pretty widely ignoring robots.txt, and plenty lie about their user agents. https://rknight.me/blog/perplexity-ai-is-lying-about-its-user-agent/

      I'd fully expect OpenAI to do some checks that their bot isn't getting different responses than a seemingly real request.

    • arccyJun 2025

      it works, i think the most visible ones are where people style their atom / rss feeds instead of rendering separate xml / html pages https://rknight.me/blog/styling-rss-and-atom-feeds/

    • lolinderJun 2024

      Because that's literally what the author does in TFA and then complains about when Perplexity complies.

      > What is this post about https://rknight.me/blog/blocking-bots-with-nginx/

    • LeoPantheraNov 2021

      Don't forget TrackerZapper to strip tracking codes from copied URLs: https://rknight.me/apps/tracker-zapper/

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