This is a fantastic analogy. Since you've pointed out how alterable text mediums are, I'm now thinking of services which provide a ranking of accuracy for text

This is a fantastic analogy. Since you've pointed out how alterable text mediums are, I'm now thinking of services which provide a ranking of accuracy for text publications. Off the top of my head, I can think of two metrics: (1) The number of sources a publication cites, like a bibliography. (2) The number of publications which refer back to a publication, like PageRank.