1. A method for placing cluster groupings into a display, comprising the steps of: accessing cluster groups comprising one or more thematically-related clusters; identifying those cluster groups that are sufficiently dissimilar from the other cluster groups as unique and automatically positioning the unique cluster groups around a shape defined centrally within a display; and placing the remaining non-unique cluster groups in relation to the unique cluster groups positioned in the display, wherein the steps are performed by a suitably-programmed computer.