With search engines, advertisers typically bid on keyword phrases relevant to their target market. Content sites commonly charge a fixed price per click rather than use a bidding system.

• 在搜索引擎上，登广告的人需要竞价获得与其目标市场相关的关键字词。而内容型网站往往针对每一次点击核定价格而非使用竞价体系。