There is also the pre-emptive bet on the river.  Checking the river opens things way up for your opponent to hammer the pot in a bluff.  If you're willing to call a lower bet on the river, why not strike first?  You have a decent chance of it representing a value-bet bluff and could take it down right there.
		 
		
		
		
		
		
		
		
		
			
			
			
			
			
			
			
			
			
			
				
			
			
			
		 
	
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