Patent ID: 7908171

Claim:
An information providing system comprising: an information registration unit, implemented on a processor, configured to register, using the processor, a front keyword for use in relation to content or content information to be provided to a user terminal and a back keyword set in relation to the front keyword; an advertisement registration unit configured to register advertisement information for use in relation to the back keywords; and an information providing unit configured to provide the advertisement information to the user terminal, wherein the information registration unit includes a front keyword registration unit that registers the front keyword for use in relation to the content or content information; a back keyword registration unit that registers the back keyword for use in relation to the front keyword, the back keyword being a keyword that is not provided to a user at the user terminal; and an advertisement information registration unit that obtains the advertisement information having been registered by the advertisement registration unit and sets the advertisement information in relation to the back keyword; wherein the advertisement registration unit includes an advertisement selection unit that selects advertisement information to be set in relation to the back keyword based upon bid information corresponding to the back keyword, obtained from sponsor terminals belonging to sponsors providing the advertisement information; and an advertisement registration unit that registers the advertisement information having been selected by the advertisement selection unit; and wherein the information providing unit includes a display controller that displays at the user terminal the front keyword together with keyword buttons each operated to select a front keyword; and an advertisement providing unit that receives the front keyword selected through the keyword button and provides to the user terminal advertisement information selected by the advertisement selection unit in correspondence to the back keyword registered in relation to the front keyword.