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Spamdexing

Techniques

  • Hidden or invisible text
    • Disguising keywords and phrases by making them the same (or almost the same) colour as the background, using a tiny font size or hiding them within the HTML code such as no frame sections, ALT attributes and no script sections. This is useful to make a page appear to be relevant in a way that makes it more likely to be found. Example: A promoter of a Ponzi scheme wants to attract web surfers to a site where he advertises his scam. He places hidden text appropriate for a fan page of a popular music group on his page hoping that the page will be listed as a fan site and receive many visits from music lovers.
  • Keyword stuffing (also known as keyword spamming)
    • Repeated use of a word to increase its frequency on a page. Older versions of indexing programs simply counted how often a keyword appeared, and used that to determine relevance levels. Most modern search engines have the ability to analyze a page for Keyword stuffing and determine whether the frequency is above a "normal" level.
  • Meta tag stuffing
    • Repeating keywords in the Meta tags more than once, and using keywords that are unrelated to the site's content.
  • Mirror websites
    • Hosting of multiple websites all with the same content but using different URL 's. Some search engines give higher rank to results where the keyword searched for appears in the URL.
  • Gateway or doorway pages
    • Creating low-quality web pages that contain very little content but are instead stuffed with very similar key words and phrases. They are designed to rank highly within the search results. A doorway page will generally have "click here to enter" in the middle of it.
  • Page redirects
    • Taking the user to another page without his or her intervention, e.g. using META refresh tags, CGI scripts, Java, JavaScript, Server side redirects or server side techniques.
  • Cloaking
    • Sending to a search engine a version of a web page different from what web surfers see.
  • Code swapping
    • Optimizing a page for top ranking, then swapping another page in its place once a top ranking is achieved.
  • Link spamming
    • Link spam takes advantage of Google 's PageRank algorithm, which gives a higher ranking to a website the more other websites link to it. A spammer may create multiple web sites at different domain names that all link to each other. Another technique is to take advantage of web applications such as weblogs and wikis that display hyperlinks submitted by anonymous or pseudonymous users. Link farms are another technique.
  • Referrer log spamming
    • When someone accesses a web page , i.e. the referee, by following a link from another web page, i.e. the referrer , the referee is given the address of the referrer by the person's internet browser. Some websites have a referrer log which shows which pages link to that site. By having a robot randomly access many sites enough times, with a message or specific address given as the referrer, that message or internet address then appears in the referrer log of those sites that have referrer logs. Since some search engines base the importance of sites by the number of different sites linking to them, referrer log spam may be used to increase the search engine rankings of the spammer's sites, by getting the referrer logs of many sites to link to them.

Retrieved from http://en.wikipedia.org/wiki/Spamdexing

Reprinted from Wikipedia, The Free-Content Encyclopedia under the GNU Free Documentation License.

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October 22 2014 13:47 UTC