While this is a great idea, the problem is two-fold: 1. I'm swamped with work and don't have the time to rewrite the article directory code, update the old articles in the database, or even add new articles at the present time. 2. At least 70% of the articles on the site were added before the article database existed and I have no idea when they were added (so I couldn't even do it if I wanted to).
I think I've somewhat addressed this issue. On the main page and the article directory page you can now find links to the last posted articles in the order they were posted. As I mentioned above ordering all of the articles is an impossibility but I will do this from now on.