Arranging windows on large display real estate

Hi,

One of my relatives just bought a mac pro with 4 30" cinema displays. He is new to the mac and he is using me as his tutor! He asked me how he could make it so that he could organize all of his safari windows neatly on the display (automatically -- without manually dragging each one to it's corner on the respective display) so that he could have a bunch of safari windows open at the same time without overlapping each other. He came from Windows 7 and is used to the feature where you can drag a window to one side of the screen and have the window sized to the left half of the screen accordingly. He doesn't want exactly this, because that would waste a lot of the available real estate he has, but he needs something so that he doesn't have to drag 10 windows all across the landscape every time he opens safari.