the ruling has major implications for any project that serves as a collection of knowledge. information (that is, facts, discoveries, etc.), from any source, is fair game, but cannot contain any of the "expressive" content added by the source author. that includes not only the author's own comments, but also his choice of which facts to cover, his choice of which links to make among the bits of information, his order of presentation (unless it is something obvious like an alphabetical list), any evaluations he may have made about the quality of various pieces of information, or anything else that might be considered "original creative work" of the author rather than mere facts.