To provide a content service system to a web log portal site and the web log customer site, for displaying a keyword of a topic suited to a request from a customer and event news by ranking, with a means for displaying a content such as a ranking and a thread, in association with an arbitrary keyword and event news in the web portal site and a related web log customer site.

This content service system has a means for inputting automatically an arbitrary keyword into a web search engine 11 at every set time or a set interval, for storing site addresses, site titles and summary text data from the first place up to an arbitrary place in a web retrieval result, in a database 12, and for displaying the ranking correlated with the keyword of the database 12 and the event news, or the thread content, in the web log portal site 15 and the web log customer site 16 related to the web log portal site 15.

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