Web engine Cloaking and Ip delivery
April 9th, 2010Cloaking is really a black hat search engine optimization (SEO) technique by which the written content presented to your search engine spider is totally different to that presented into the user’s browser. This is done by delivering information centered for the IP addresses or the User-Agent HTTP header on the user requesting the page. When a user is identified as a search engine spider, a server-side script delivers a totally different version for this web page, one that contains content material not present for the visible page. The purpose of cloaking is to deceive search engines so they display the page when it would not otherwise be displayed.
As of 2006, much better techniques of accessibility, including progressive enhancement are obtainable, so cloaking isn’t considered necessary by proponents of that technique. Cloaking is typically applied being a spamdexing system, to try to trick search engines into giving the relevant internet site a higher ranking; it can also be utilised to trick search engine users into visiting a web-site centered about the search engine description which internet site turns out to have substantially varied, or even pornographic content material. For this cause, significant search engines consider cloaking for deception to be a violation of their guidelines, and as a result, they delist internet sites when deceptive cloaking is reported.
Cloaking may be a form of the doorway web page process.
A similar technique is also chosen for the Open Directory Project web directory. It differs in various ways from search engine cloaking:
It’s intended to fool human editors, rather than personal computer search engine spiders.
The decision to cloak or not is regularly based upon the HTTP referrer, the user agent or the visitor’s IP; but far more advanced methods could be also dependent upon the client’s behaviour analysis after a couple of web page requests: the raw quantity, the sorting of, and latency between subsequent HTTP requests sent to a website’s pages, plus the presence of a check for robots.txt file, are some in the parameters where search engines spiders differ heavily from the natural user behaviour. The referrer tells the URL from the web page on which a user clicked a link to get towards page. Some cloakers will give the fake page to anyone who comes from a internet directory site, given that directory editors will commonly examine web sites by clicking on links that appear on a directory internet web page. Other cloakers give the fake web page to everyone except those coming from a significant search engine; this makes it harder to detect cloaking, while not costing them lots of visitors, since most folks discover internet sites by utilizing a search engine.
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