KnowledgeTrybe (https://knowledgetrybe.com) The focus is on Psychology, Creativity, History, and Learning. I'm still working on adding comments. Please let me know what you think about this. Would love to hear any feedback.
In my opinion, a well-designed web site should pass the "someone linked me here and told me it was good but didn't say anything more about what it is" test. When I landed on your site, I felt it wasn't that easy to discover what it's about if I don't already know.
Even just adding a short sentence ("read about and discuss psychology, creativity, and more" or something) would go a long way, but having an "about" link I can find and follow might be good too.
FWIW, I think Hacker News also fails this test to some extent. It's possible to glean what the site is about from the Guidelines and FAQ links at the bottom of the page, but it doesn't really cater to that at all.