Good Seo : Art or Science of Search Engine Optimization (SEO)

Contextual advertising is the paid placement of ads on contextually relevant websites. Contextual ads are dynamically served, based on the user’s current web activity. For example, if a user is viewing a site about sports, the user might see a contextual ad for sports-related companies, such as memorabilia dealers or ticket sellers. Contextual advertising is also used by search engines to display ads on their search results pages, based on keywords in the user’s search query.