It's an awful feature to have on by default though. Whenever I'm in Windows, I can't seem to drag a window anywhere without Windows just deciding that I actually want to anchor it on the side and re-size it. NO! I just want to move the window a little. Jeez! There's probably a way to turn it off, but why on earth is that the default behavior? Fortunately I only use windows once a month or so, so I haven't been bothered to figure out how to disable this.
Also, I seem to recall if you "shake" a window while dragging it, it does something else unexpected. Great, now I need to have a surgeon's hands just to move my window around. Can you just let me drag my window in peace, Microsoft?