A form of paid inclusion where a search engine is "fed" information about pages via XML, rather than gathering that information through crawling actual pages. Marketers can pay to have their pages included in a spider-based search index either annually (per URL), or on a CPC basis (based on an XML document representing each page on the client site). New media types are being introduced into paid inclusion, including graphics, video, audio, and rich media. Source: SEMPOBack to previous
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