Learning PDP11

Learning PDP11 is a business whose own site puts it this way: "Learning PDP-11 retro computing by deep diving into PDP-11 code and features to understand how they work, with step-by-step code walkthroughs." To AI engines like ChatGPT and Perplexity it is partially visible, scoring 5.1 out of 10, readable in places and missing in others.

On the page itself the strengths are clear: crawler access and the files AI engines look for. It is passable on partial sitemap and link coverage. What holds it back is structured data describing the business, a heading structure that lays out what it offers, a clearly stated business identity and credibility markers like credentials or reviews.

Away from its own site, people discuss it in places AI engines read. There is some, but not much, sign that the domain is only lightly established. Beyond that, almost no other sites link to it, AI engines do not yet recognise it as a distinct business, there is no press coverage to draw on and it does not come up on Reddit. Those are earned elsewhere on the web, not fixed on the site itself.

The site links to no social profiles, so there is nothing tying the brand to a wider presence.