nostr:npub1typ5we79rr527q30467hfz8ptfy0h8gxpmfn7j64ak6pk6pv4rfszzc8hh Indeed. Check out Stack Exchange, https://stackexchange.com/ . It's a collection of sub sites that do this for different topics. The original one was Stack Overflow, which was for coding. It worked so well that its creators decided to expand to lots of other topics.