Abstract: A method and system of processing an invalid click is provided. The method includes the steps of: verifying an invalid click Internet Protocol (IP) address of a user terminal generating the invalid click with respect to an advertisement; associating the invalid click IP address with the advertisement, and registering and maintaining the invalid click IP address in an invalid click list when the invalid click IP address is verified; and providing the user terminal of the invalid click IP address with a result page other than the advertisement with respect to an advertisement exposure request using the invalid click IP address. When a number of clicks is greater than or equal to a predetermined number of clicks with respect to the same advertisement using the same IP address over a predetermined time, the step of verifying verifies the same IP address as the invalid click IP address.

Abstract: A method and system of inspecting advertising contents of a keyword advertisement is provided. The method includes: crawling a Universal Resource Locator (URL) registered by an advertiser and extracting a URL keyword related to an advertisement site of the advertiser; extracting a target keyword from a plurality of advertisement information being registered in relation to the URL; and determining further inspection-required advertisement information through keyword comparison between the extracted URL keyword and the target keyword, the further inspection-required advertisement information having low relevance to the advertisement site.

Abstract: A method of recommending an advertisement keyword comprises receiving at least one keyword for an online advertisement from an advertiser; allowing the advertiser to select at least one standard for keyword suggestions associated with the advertisement; selecting at least one keyword suggestions based, at least in part, upon the at least one standard for keyword suggestions; and providing at least some of the selected at least one keyword suggestions.

Abstract: A method and system of processing an invalid click is provided. The method includes the steps of: verifying an invalid click Internet Protocol (IP) address of a user terminal generating the invalid click with respect to an advertisement; associating the invalid click IP address with the advertisement, and registering and maintaining the invalid click IP address in an invalid click list when the invalid click IP address is verified; and providing the user terminal of the invalid click IP address with a result page other than the advertisement with respect to an advertisement exposure request using the invalid click IP address. When a number of clicks is greater than or equal to a predetermined number of clicks with respect to the same advertisement using the same IP address over a predetermined time, the step of verifying verifies the same IP address as the invalid click IP address.

Abstract: A method and system of inspecting advertising contents of a keyword advertisement is provided. The method includes: crawling a Universal Resource Locator (URL) registered by an advertiser and extracting a URL keyword related to an advertisement site of the advertiser; extracting a target keyword from a plurality of advertisement information being registered in relation to the URL; and determining further inspection-required advertisement information through keyword comparison between the extracted URL keyword and the target keyword, the further inspection-required advertisement information having low relevance to the advertisement site.

Abstract: A method of providing a keyword includes: receiving a query from a user; setting, according to user's selection, a keyword providing range with respect to the query; and providing a representative keyword or a tail keyword with respect to the query based on the keyword providing range.

Abstract: A method of recommending an advertisement keyword comprises receiving at least one keyword for an online advertisement from an advertiser; allowing the advertiser to select at least one standard for keyword suggestions associated with the advertisement; selecting at least one keyword suggestions based, at least in part, upon the at least one standard for keyword suggestions; and providing at least some of the selected at least one keyword suggestions.

Abstract: A charging method of an Internet advertisement is provided. A method of monitoring an invalid click on a search advertisement, the method including: tracking user's activities after clicking a web site which is displayed as online advertisement, based, at least in part, upon predetermined rules; collecting the tracking information of the user's activities; analyzing at least one activity pattern of the user's activities based, at least in part, upon the collected tracking information; and determining if the user's click is an invalid click based, at least in part, upon the analyzed activity pattern and a predetermined reference value.

Abstract: A method of managing an advertisement and a system for executing the method are provided.