13. A method for retrieving a program by a computer, comprising: acquiring, from the Internet, a trending word for which a search frequency is rising; retrieving from a program information database program information that includes the trending word, the program information database storing: an electronic program guide that includes program information about programs that are currently broadcasted or scheduled to be broadcasted, and recorded program information that includes program information about recorded programs; scheduling a recording of a program having the program information that includes the trending word when the program information that includes the trending word is retrieved from the electronic program guide; and playing the program having the program information that includes the trending word when the program information that includes the trending word is retrieved from the recorded program information.
13. A method for retrieving a program by a computer, comprising: acquiring, from the Internet, a trending word for which a search frequency is rising; retrieving from a program information database program information that includes the trending word, the program information database storing: an electronic program guide that includes program information about programs that are currently broadcasted or scheduled to be broadcasted, and recorded program information that includes program information about recorded programs; scheduling a recording of a program having the program information that includes the trending word when the program information that includes the trending word is retrieved from the electronic program guide; and playing the program having the program information that includes the trending word when the program information that includes the trending word is retrieved from the recorded program information. 14. The method as set forth in claim 13 , wherein the acquiring includes acquiring a specific number of trending words, from those having high rankings, from the Internet.