1. A speech recognition method comprising the steps of: (a) receiving a nametag utterance; (b) decoding the nametag utterance to recognize constituent subwords of the nametag utterance; (c) determining the number of subwords in the nametag utterance; and (d) associating the nametag utterance with one or more of a plurality of different nametag clusters based on the number of subwords in the nametag utterance.