I'm guessing it's some mix of subtle marketing (product and career opportunities) and a genuine interest in a healthy community of sharing useful knowledge for

I'm guessing it's some mix of subtle marketing (product and career opportunities) and a genuine interest in a healthy community of sharing useful knowledge for the benefit of everyone. Possibly also the people working on it are super proud and want to share to keep that feeling going! I know I'm bummed when I do something cool but have no audience :) Would love to see an answer to this question!