1. An apparatus for helping in a reading of an electronic message exchanged between multiple users, comprising: a chat room or instant message utility sending an electronic message between users; an extraction unit for extracting a word from the electronic message sent to a particular user; an acquisition unit for acquiring history information on the word being extracted by the extraction unit and storing the history information in a history storage unit, wherein the history information includes a viewing of the word by the particular user, a usage of the word by the particular user; and a consultation of an electronic dictionary for the meaning of the word by the particular user; a display determination unit for determining, based on the history information acquired by the acquisition unit, whether a meaning of the word extracted by the extraction unit needs to be presented to the particular user, wherein the determining is based on a criteria related to a viewing of the word by the particular user, a criteria related to a usage of the word by the particular user, and a criteria related to a consultation of an electronic dictionary for the meaning of the word by the particular user; and a display for displaying the meaning of the word in a case in which the display determination unit determines that the meaning of the word needs to be presented to the user.
1. An apparatus for helping in a reading of an electronic message exchanged between multiple users, comprising: a chat room or instant message utility sending an electronic message between users; an extraction unit for extracting a word from the electronic message sent to a particular user; an acquisition unit for acquiring history information on the word being extracted by the extraction unit and storing the history information in a history storage unit, wherein the history information includes a viewing of the word by the particular user, a usage of the word by the particular user; and a consultation of an electronic dictionary for the meaning of the word by the particular user; a display determination unit for determining, based on the history information acquired by the acquisition unit, whether a meaning of the word extracted by the extraction unit needs to be presented to the particular user, wherein the determining is based on a criteria related to a viewing of the word by the particular user, a criteria related to a usage of the word by the particular user, and a criteria related to a consultation of an electronic dictionary for the meaning of the word by the particular user; and a display for displaying the meaning of the word in a case in which the display determination unit determines that the meaning of the word needs to be presented to the user. 4. The apparatus according to claim 1 , wherein the acquisition unit acquires the history information on the viewing of the word and the history information on the usage of the word, and even if the history information on the viewing of the word does not meet a criterion that is related to the viewing of the word and predetermined as a criterion for presuming that the particular user knows the meaning of the word, the display determination unit determines that the meaning of the word need not be presented to the particular user if the history information on the usage of the word meets a criterion that is related to the usage of the word and predetermined as a criterion for presuming that the particular user knows the meaning of the word.