I was trying to answer an obscure question about the meaning of something in Linux's /proc filesystem. Whatever I entered into DDG or Google, I just got hits where someone had posted a copy of the file into a forum post, so it hit all the search terms, but the discussion wasn't actually about my topic.

Perplexity understood the question, and answered it... dead wrong! But its fake "citation" links led directly to several pages where people really were discussing my topic, and they answered my question.