As far as no-limit goes, its a lot more of an "it depends" situation. For limit, I tend to threebet, for the following reasons:  
 
- Im willing to go to 4 bets with it hands down 
 
- If I get reraised, this gives me a whole lot of information about the other guys hand 
 
If it comes three bets to me, Im a lot more likely to just call and reevaluate.
		 
		
		
		
		
		
		
		
		
			
			
			
			
			
			
			
			
			
			
				
			
			
			
		 
	
	 |