13. The method of claim 1 wherein grouping communications of members of the first party type into a first set of clusters comprises: grouping communications corresponding to requests for information from members of the first party type into a first set of clusters.
13. The method of claim 1 wherein grouping communications of members of the first party type into a first set of clusters comprises: grouping communications corresponding to requests for information from members of the first party type into a first set of clusters. 14. The method of claim 13 wherein grouping responsive communications of members of the second party type into a second set of clusters based upon the grouping of the communications of members of the first party type comprises: grouping communications of members of the second party type into groups corresponding to responses to the requests for information from members of the first party type.