Guild Wars - State of the Game @ Official Site

The latest State of the Game article at the official Guild Wars site examines the importance of positioning and movement.

Positioning and movement of individual characters can mean the difference between breaking an enemy team and your own team falling apart. The overextension of one character can lead to an untimely demise, resulting in a temporary numbers imbalance and time wasted resurrecting the fallen character. In cases where two teams are otherwise equal, such a transient advantage often translates into a more permanent advantage, such as a morale boost. The following tips attempt to explain how to maximize individual and team positioning.