“Traditional horizontal search engines cannot always identify the target audience, niche or vertical industry of a page or site. Vertical search engines address this issue by the nature of their design. They identify sites according to more specific criteria and sometimes even by human input.” HumansSometimesAudienceIssuesDesignIndustryPagesTraditionalAddressesTargetEnginesSiteCriteriaNicheInputVerticalHorizontalTarget AudienceSearch Engine Book:Get Rich Click!: The Ultimate Guide to Making Money on the Internet Source: Get Rich Click!: The Ultimate Guide to Making Money on the Internet