Search engine marketing



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In Internet marketing, search engine marketing, or SEM, is a set of marketing methods to increase the visibility of a website in search engine results pages (SERPs). SEM strategies include:



  • Search engine optimization attempts to improve rankings for relevant keywords in search results by improving a web site's structure, content, and relevant backlink count.
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  • Pay per click advertising uses sponsored search engine listings to drive traffic to a web site. The advertiser bids for search terms, and the search engine ranks ads based on a competitive auction as well as other factors.
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  • Paid inclusion feeds listings into search engines, typically comparative shopping sites like Nextag.
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  • Social media optimization promotes by placing ideas within online communities with the hope that they will spread virally.


Search Engine Marketing Objectives


SEM is most important for the businesses who sell goods and services online or who use their websites to generate sales leads. Other goals for SEM including: building a brand, enhancing reputation with investors, generating media coverage, and driving traffic to physical business locations. Organizations such as non-profits, universities, governments, and political parties also use SEM to promote their ideas.


Ethical considerations


Many forms of search engine optimization only amount to ensuring compliance to search engines' guidelines for inclusion and removing any technical barriers that might keep the website from reaching a proper ranking. However, other methods of search engine optimization such as keyword spamming are often viewed as "gaming the system" and considered unethical. See the article on search engine optimization for details.


Displaying advertisements or sponsored results in an area visually separated from the algorithmically determined results is generally considered ethical. However, some search engines allow the ranking of a website to be influenced with a payment and provide little or no indication to the end-user that this has happened. Since the search engines give the impression or claim that the rankings reflect the relevance or popularity of the websites, this is often seen unfair or deceptive.


Search engine advertising products that don't guarantee a specific ranking or an amount of visibility are seen as unethical by some search engine marketers. The product might provide an unspecified "boost" or the final ranking or visibility might be a result of an auction.


Paid inclusion has not caused much concern. However, it has been suggested that search engines should improve the speed they pick up new websites and that paid inclusion services thus create a conflict of interest that discourages improving service levels across the board.


Search Engine Marketing Organizations


The duties of non-profit search engine marketing organizations are to educate members and non-members, support and promote the industry, engage in research and studies, raise awareness of issues and to play an active role in the self regulation of the search marketing industry.



Noteworthy search engine marketing organizations


  • SEMPO, the Search Engine Marketing Professional Organization, is a non-profit professional association for search engine marketers.
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  • SMA-NA, the Search Marketing Association of North America.

原文： http://en.wikipedia.org/wiki/Search_engine_marketing