I think the issue lies with each individual character. Some characters may consider any outside help to be spoiling their journey, whereas other characters may decide that they need help in order to progress. I joined a guild because I found the experience of being in-game and figuring everything out, starting from scratch and finding my own way to be entirely too daunting. The help I recieve from my guild has enhanced my game experience, and meant that I've been a part of Planeshift longer than I might have if I had no help. If solutions and trainer lists etc. are posted in private, in defined areas, and not simply shouted out and made impossible to ignore, then it is up to ME to decide whether I access them or not. Therefore it is up to me (or my character) to decide what is 'spoiling' and what I dont want to look at, or what information will be helpful to me or my characters. Simply, everyone knows that information is out there, its just a matter of deciding whether you want to look for it or not.
I think that spoiling would be posting answers and lists in a place where people couldnt help but see them, so they had no choice but to be instantly inundated with the information. Anything that recquires joining a guild (which to my mind works, in this case, more like a union or co-operative) or actively ASKING someone is no longer spoiling, because you have seeked out the information yourself, that is, you have decided that you need the information in order to progress. As long as people have the choice of whether or not to see information, then any answers are, in my mind, not spoiling- answers to questions are helpful.
Based on my in-game experience so far I would go so far as to say that there is no spoiling in Planeshift at the moment. I say this because there are no maps available in game (apart form the library- but we all know how helpful that is!) and no-one is running around shouting about who trains sword past 30, or what to give a NPC to get a quest. Any information that could be considered to be spoiling has to be actively pursued, there is no chance that a person will accidently 'stumble upon' a complete list of trainers, or the looting potential of each NPC. I think that this is exactly as it should be, and I congratulate the forum moderators, GMs, developers, Guild leaders and every individual player for allowing characters to make up their own mind when it comes to what information they wish to access.