Service Providers
Google AdSense was the first major contextual advertising network. It works by providing webmasters with JavaScript code that, when inserted into webpages, displays relevant advertisements from the Google inventory of advertisers. The relevance is calculated by a separate Google bot, Mediabot, that indexes the content of a webpage. Recent technology/service providers have emerged with more sophisticated systems that use language-independent proximity pattern matching algorithm to increase matching accuracy.
Since the advent of AdSense, Yahoo! Publisher Network, Microsoft adCenter, Advertising.com Sponsored Listings (formerly Quigo) and others have been gearing up to make similar offerings.
Read more about this topic: Contextual Advertising
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