I was noodling around trying to organize "the space" in my head and put this picture together. The x axis is the "context". IE low context is stuff like CD's and books which don't change, are worth approximately the same amount to most people and don't have much timing or personal context. The far right is very personal, very timing sensitive, high context information such as information about your current "state". Then there is everything in between. The top layer is the type of content sorted by how much context they involve. The next layer is how they are aggregated and syndicated. Below that are substrates that are currently segmented vertically, but could be unified horizontally with open standards. Anyway, just a first path. Thoughts and feedback appreciated.
UPDATE: Changed color to red and edited the examples to be brand agnostic.