Expression/structure can be copyrighted, but that's also not the whole story: http://en.wikipedia.org/wiki/Feist_Publications_v._Rural_Telephone_Service http://

Expression/structure can be copyrighted, but that's also not the whole story: http://en.wikipedia.org/wiki/Feist_Publications_v._Rural_Telephone_Service http://en.wikipedia.org/wiki/Feist_Publications_v._Rural_Tel... If this document merely lists the keywords in ascending/descending order of popularity, it is unlikely that the author's expression is creative enough to warrant copyright.