20 Concepts of SEM (Ⅱ)
Linkfarm refers to many sites (usually large number) in order to improve the composition of a similar workshop or mill group, to improve every web page rating groups by means of mutual link each other.
Nofollow is a link property used by the webmaster, which is intended to tell the search engine that they are not voting for the site to which the link is directed. This link may also be created by the web site users themselves (such as a link in a blog comment) or a link to a paid transaction (such as an ad or a sponsor's link). When Google recognizes the NoFollow properties of these reverse links, the contribution of these links will not be calculated in the page rating and search results ranking algorithm.
LinkSculpting refers to the site administrator to other sites on the site of the reverse link property settings. For example, the administrator to add a link to the Nofollow attribute, which allows administrators to determine the use of their own website for a specific site to improve the page rating, or not to help a specific website to improve web rating. However, the role of this approach has been minimal, because Google has decided to use their own algorithms to decide how to deal with the Nofollow attributes of the link.
Google search algorithm is to find the most relevant sites and pages for each search request. This algorithm considers more than 200 factors (Google), including page rank, title, meta tags, website content, as well as the age of the domain name and so on.
SERP the English name for the SearchEngineResultsPage. basically, this is your usual type of key words in the Google after the return of the page. The flow of traffic on your site from this page depends on the rank of your site in the search results.
Cloaking refers to the use of the code on the same page to allow the robot and the real person to see the same content. The purpose is to make the page through key words and enhance the page rating, and the real purpose is to sell and sell a variety of unrelated products or services.
DuplicateContent usually refers to a page in reference to the inside or outside the station long substance, or exactly the same and extremely similar situation exists, and it is also a site should try to avoid the occurrence of, otherwise it is easy to your site punished.
CanonicalURL is a link to a web page to meet the specifications and standards.
Robots.txt is a TXT file exists in your domain name root under the directory, the role is to tell the spider and spider web directory structure information, and limit their access to specific folders and content, or is completely them outside.
WebCrawler is also referred to as the crawler or spider, on behalf of the search engine on the web browsing, the purpose is to find new links and pages, this is the first link to the index.
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