I recently answered a question and was told by several moderators that I need to add sources. Is this really an appropriate thing to require for a Q&A website? I think that you can assume that if no source is quoted, linked, or cited, that it is either opinion, original research, or wrong. A healthy Q&A website will have lots of good answers and a few bad (even wrong) answers. That's why we have voting, right?
Being told to cite my sources made me never want to answer a question on here again. It drives away people who aren't hardcore researchers, but who may be able to contribute. If that happens, people will stop asking questions that aren't at the level of an academic journal, and before long, the site will be exclusive to people with PhDs in astro-physics. That's fine if that's the goal, but I thought this site would be more than that.