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	# This method searches a source by  the http, the www and the trailing / to a url
	def self.find_by_url(url)
		Source.find :first, :conditions => [ " url = ? OR url = ? OR url = ? OR url = ? ", url, url.gsub("http://", "http://www"), url + "/", url.gsub("http://", "http://www")+"/"] 
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