Previously, articles in what we call the “category view” were sorted by APPROVED DATE. This is the last date an article was approved on. Some members figured out that all they had to do is edit their article, have us review it, and they were able to bring their old article to the front of the line in the category view.
Now, articles in the category view are sorted by original SUBMIT DATE with a secondary sort by article ID. This prevents the above gaming of the system.