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		 If you tested AFF first, then its not that accurate a test since there would have been more time for a member to upgrade to the full month membership. Ideally, the test should be run simultaneously but I know that's not always possible. Another way would be to run your traffic test and then post your stats after a few weeks to allow time for free members to upgrade. 
WG 
		
	
		
		
		
		
			
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