Seems like this should be exploitable, betting at Betfair when the line is screwed up and hedging at other sites. 
 
FWIW, I put $50 on Obama at 4:1 in January, 2007.  Oh, strike that... that was just for him to be the Democratic nomination!  Already won that one...
		 
		
		
		
		
		
		
			
		
		
		
		
		
			
			
			
			
			
			
			
			
			
			
				
			
			
			
		 
	
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