Search Engine Marketing

Search engine marketing, or SEM, is a form of Internet marketing that seeks to promote websites by increasing their visibility in search engine result pages (SERPs).

According to the Search Engine Marketing Professional Organization, SEM methods include: search engine optimization (or SEO), paid placement, contextual advertising, and paid inclusion.[1] Other sources, including the New York Times, define SEM as the practice of buying paid search listings.[2][3]

Google Adwords

Yahoo Search Marketing

Microsoft Live


Fuente: wikipedia
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