I think most important thing to moderate in any S.E. site is quality of question. Any question ask should be clear by user and if not then it should be edited by other users.
I want to bring the question to attention of all of you.
Who invented potential and kinetic energy?
Please read the question title and my answer, I know it is not answer to the question but it is answer to the title of the question.
I think HSM need moderators so quality of question is maintain.