Regarding the recent question "How do I quickly find the official errata for any book?".
It was closed by several heavy users as a duplicate of "How do you tell if a D&D book is 3.0 or 3.5?".
The questions are not the same, but the latter question happens to have a very long answer that contains the answer to the first question, among other things.
To make things worse, this answer is the third answer from the top, and finding the information that the poster asked requires thoroughly looking at the footnotes to the long lists in this answer. Basically, without @HeyICanChan's comment pointing out the specific answer, the answer is really hard to find, and Comments are just not persistent enough to contain such important additional information.
To sum it up:
- Are answers to unrelated questions, that happen to answer a new, different question a reason to VTC as duplicate?
- Does this change if the answer is not the top-voted or accepted answer?