Device for providing keyword advertising, method for providing such keyword advertising, and recording medium on which is recorded a program for executing same

A keyword advertising providing method using a keyword advertising providing device for communicating between one or more advertiser terminals and one or more user terminals over a network, the keyword advertising providing method comprising:

• receiving a request, by each of one or more advertisers, for a bid on specific keyword advertising from each of the one or more advertiser terminals;
• receiving a bid price on the keyword advertising from the each of the one or more advertiser terminals;
• checking a bid time when the bid price is received;
• setting a final-bid ranking for each advertiser in order of higher bid price and earlier bid time;
• setting, as a final-bid price of each advertiser, a price obtained by adding a preset price to a bid price proposed by an advertiser ranked directly below each advertiser based on the final-bid ranking of the advertiser;
• transmitting advertising information of each advertiser to each user terminal according to the final-bid ranking;
• and
• calculating an advertising cost of each advertiser for the advertiser information based on the final-bid price.

A computer readable recording medium having a program recorded therein, the program causing a computer to execute:

• receiving a bid price on keyword advertising from each of one or more advertisers who have requested bids on a specific keyword;
• extracting a bid time when the bid price is received from the advertiser;
• setting a final-bid ranking for each advertiser in order of higher bid price and earlier bid time;
• setting, as a final-bid price of each advertiser, a price obtained by adding a preset price to a bid price proposed by an advertiser ranked directly below each advertiser based on the final-bid ranking of the advertiser;
• selecting advertising information of the advertiser according to the final-bid ranking to output the selected advertising information together with a search result;
• and
• calculating an advertising cost of each advertiser as the advertising information is output.