1. A method of dynamically identifying a subset of a set of items for which a plurality of selectors have a similar affinity, each of the items having a combination of attributes, the method comprising the steps of: (a) presenting for display to each of a group of selectors a subset of a first group of items, each of the first group of items having a particular combination of attributes; (b) capturing data indicative of an item preference expressed for a subset of the presented items by at least some of the group of selectors; (c) selecting a second group of items responsive to the captured data; (d) identifying a subset of the second group of items having similarity among respective attributes.