1. An information processing apparatus comprising: obtaining means for obtaining program information on programs that are to be broadcast in a predetermined time period; keyword extraction means for extracting keywords that are obtained by performing morphological analysis on text data contained in the obtained program information in such a manner as to be associated with corresponding programs; current-affairs keyword extraction means for extracting, as current-affairs keywords, keywords that are associated with corresponding programs that are to be broadcast on a plurality of different broadcast stations and that are associated with only programs that are to be broadcast today from among the keywords extracted by the keyword extraction means, wherein, for each of the extracted current-affairs keywords, the number of appearances of the current-affairs keyword is summed, and an importance degree indicating an importance characteristic of the current-affairs keyword for a user is determined on the basis of the summed number of appearances.