[hogger]

And what do you do if the button bets and the BB now check raises and it's two cold back to you? Now here's a situation where goofball mentioned earlier. I don't think BB could check raise bluff two players but I have seen it done in this situation where he could squeeze you out with a good hand that can't beat a straight and that's exactly the hand he had. Betting the river protects you from getting moved off the hand.

Meow.

This is the most important reason to bet other then the fact you win more in long run by betting vs checking