Dan - While what you describe is certainly possible, it feels like a very complicated way of implementing contact information. I still maintain that people are stretching DC and looking for trouble when they the store details of one resource in the metadata of another: 1) The purpose of DC is discovering resources, not tracking personal information about related (agent) resources; and 2) Agents are in fact separate resources, the metadata for which can and should be maintained separately from the resources to which they relate. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%