Wiki has knowledge but not questions which can make answers harder to find when all you have to enter into a search is the question. If someone else has asked the question your searching then the answer pops right up but if not then you would need to refine your search or read about large amounts of unrelated info to get the specific bit you want. Having knowledge referenced by questions about that knowledge makes that information more available to the masses.
Wiki has knowledge but not questions which can make answers harder to find when all you have to enter into a search is the question. If someone else has asked the question your searching then the answer pops right up but if not then you would need to refine your search or read about large amounts of unrelated info to get the specific bit you want. Having knowledge referenced by questions about that knowledge makes that information more available to the masses.