1. A computer-readable storage medium having computer-executable instructions for performing steps comprising: generating a feature that is based on speech signals from at least two participants in a conversation held over an electronically recordable channel, the feature comprising a feature from a group of features consisting of: speaking rate of each participant, energy of speech of each participant, amount of overlapping speech, number of times a different participant begins to speak, number of interruptions, identity of dominant participant, and length of pauses in the speech of the participants; identifying a deviation between the feature and a conversation model; applying the deviation to a plurality of deviation models to identify which model best matches the identified deviation; and classifying the conversation into one of a number of categories based on a label associated with the deviation model that best matches the identified deviation.