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Monday, March 21, 2011

Forbidden words: Introduction and Filtration

Forbidden Words: Forbidden words, sometimes referred to as poison words, are the words that result in suspicion and loss of dignity for a web site when it is under consideration of a search engine.  For example, obscene words, adult words, and politically prohibited words come under the category of forbidden words.  Search engines usually filter the websites containing forbidden words while displaying content. Usage of Forbidden words results in fall in traffic and search engine rank.

Forbidden words are filtered by following ways:
  • ISPs
  • Search Engines
  • Filtering Software tools
 ISPs: Most filtering is done often by ISPs.  Usually, ISPs or company gateways filter based on port and IP.

Search Engines: Search engines discourage websites and online pages containing prohibited keywords by deliberately displaying them in 100th page or 200th page, which no body will visit.  

Filtering Software: Filtering software applications are popularly used by governments, parents, and employers. Communist countries such as China and North Korea and Islamic countries such as Saudi Arabia are popularly known for their restrictions on politically prohibited keywords.  Various nations maintain Firewalls, consisting of thousands of prohibited keywords, which prevent the pages containing the prohibited keywords.

  • Filtering software sometimes strictly ban from search results sites containing prohibited keywords.  
  • If the search string itself contains forbidden words, the firewall will not allow the search to be performed.
Written by: S. Chandrashekara Reddy
Contact: 9849856722
Mail Id: chandrashekara_reddy@yahoo.co.in



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