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 Please see WP:NOT. 

 I've deleted the external link to Vamist in the Foreign exchange article because it does not meet the requirements for external links.  see WP:EL.  This article has a long history of "spamming" links, where firms try to sell their trading services, etc.  Vamist is what is known as an "ad farm."  Ad farms are not needed in the article and I remove all links to them to maintain the article quality.