Originally Posted by MadQuilter
I usually cut mine across (the 42-45" length) the fabric and piece, but there is no reason why the long cut wouldn't work. You will have fewer seams and assuming you plan to do continuous binding, just make sure your seams won't land on a corner.
I usually cut mine selvege to selvege and piece on the bias. That way the seam is diagonal and is less bulky. Occasionally I will use a lengthwise cut.