All of you who thought the anodizing would not reveal silver underneath obviously have your heads buried in the sand.  Anodizing is not meant for durability but for aesthetics.  There are different types of anodizing and from the looks of the iphone they are probably using type 1 which is the cheapest and the least durable.
	
		
			
		
		
	
				
			 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		