I just found GridMove, and I have to say I can't believe I have survived this long without it. I have a suggestion, but I have no idea how hard it would be, and I suspect that it may not be possible. However it never hurts to ask right?
Since some programs use the middle mouse to drag things, I was wondering if it would be possible to chose what button is used for the middle mouse drag method. I have a mouse that has a 4th button and it would be great if I could drag the windows using that button instead of the middle mouse button.
Whether this can be done or not, thanks for the great window management tool!