Personally, I feel that spoilers (major or minor) are the freely giving of exact specifics of information, strategy, or other knowledge, regardless of if it's available waaaaay down in the Adventure Log, or the Announcements (sheesh, have you read the ENTIRE list of Announcements yet? I have, but wouldn't recommend it in one sitting!).
What I mean by exact details is saying "Go to ____ and do ___" to a question of where something is gotten/unlocked/etc. In the case of Personal Papers, merely suggesting the area and general directions TO that area are not spoilers. Exact stepping-stone directions and the name of the thing to click on, would be.
Likewise, when I asked about combat stuff initially, I heard some people say "Oh, just do XYZ"... however, I much preferred when two wonderful people offered to setup a test ritual and then gently suggested we discuss the Combat log and my findings. Yes, it took more time, but it didn't feel "spoilery" to me.
In a similar vein, when I first started playing, I considered it a spoiler when someone linked a specific thread in response to a question I saw another new person ask. That felt spoilery to me. A non-spoiler reply would have been to suggest "research _Land_ on the forums, and see what you find." This gives the person a good solid hint at where to learn things themselves, but avoids Direct Spoiler material.
Obviously the severity of spoilers differs greatly depending on the nature of the "question" wanting to be answered. Finding the perosnal papers is much different from forwarding a *.JPG of the Labyrinth, or script to solve the Broken Pattern puzzle (which I imagine exist out there somewhere, but have not seen myself, nor want to). Simple questions may, MAY, be possible to answer more directly without being considered "Spoiler", but even in the more minor cases, there are plenty of ways to say an answer that redirects the learning towards the questioner, rather than handing it out on a golden platter of reply. It's all a matter of semantics, probably, but it makes all the difference in my humble opinion.
In clarified concern,
-Maebius