Near the bottom of the main index page for the 'About this Website' forum, you can change the setting for 'Show Topics' from the default of 'active in the last month' to something longer, or search the forum to find older topics.
Taking a quick look at Gamespot, at least the 'PC & Mac Games' forum shows posts / topics more than a couple years old. Presumably the rules are different for game specific forums (I didn't see anything to indicate that older posts were just not shown in the index, anyway). Searching for 'Divinity' reveals two D2:ED forums, one currently with 2 topics (27 posts) and the other with no posts.
