Twice recently I've put in short answers for which much more detailed answers subsequently were added in. (@F'x, you were one of them, though likely you were planning your answer as I was writing mine.) The expanded answers give cool background info, figures, and even charts.
I like this kind of expansion very much! So, my comment here (phrased as a question) is just this: How can everyone encourage more of that sort of well-researched expansion of initial "here's the main idea" answers? I'm certainly upvoting good expanded answers, so that's sort of my own answer to my question.
Far from feeling slighted by someone putting in a longer, more detailed responses to items I've answered, I'm delighted to see such efforts by the community to dig in and find more info. I feel that it makes the entire Chemistry site stronger.