Dave, Yup pretty much what Mike said, at fullmoon the Sun's light is hitting
the moon square on from our point of view. As opposed to from the sides or
even rear which will cast shadows hightlighting the terrain. Just like when
you hold a torch under ya chin to greate spooky shadowy faces to scare the
kids, as oppse to shining it straight at a face which wouldn't be as scary at
all.

Thanks for the comments guy's, thought folks might be over moon shots

regards,Cs