One can just type in the source showing where they got the information they are posting about right in the content box. But, something similar to this, but a modal pops up letting you type in the source, would be cool. Then that source could be shown in either the discussion hero or near the time ago.
I know what you're thinking... "Ok, so make the extension." But, time is not on my side right now. Sometimes when I post an extension suggestion someone is feeling generous and makes it. 😊 But, no hard feelings if no one has time for this either.