36. The method of claim 35 , wherein plurality of the ranking logic assessment indicators include at least one of a competition indicator indicating a competitiveness of an advertisement, a service indicator indicating a number of visits of a user, a conversion indicator indicating a Click-Through Rate (CTR), an association indicator indicating an association, and an entry indicator indicating entry barriers, the entry barriers being a level of difficulty associated with registering a keyword.
37. The method of claim 36 , wherein assessing the keyword comprises selecting a representative keyword from keywords associated with a service indicator having a high value relative to a first desired amount, a conversion indicator having a high value relative to a second desired amount, and a association indicator having a high value relative to a third desired amount.