Quote Originally Posted by dsaxton
That's pretty silly. You should consider raising with quads on the turn just because your opponent might have a straight flush draw? Give me a break.

There is no chance I would ever fold quads under any circumstance, even with a four card straight flush on the board. If my opponent is showing strength with both a four card straight flush on the board and I have quads, I would consider it more likely he simply had a full than a straight flush and put all my money in the pot.
I admit that this example is overkilled a bit rather, but what's important is that you gasp the concept of not raising when a reraise will make you puke, or your raise will only get called by a better hand.