Interest refers to the purposes participants in meaning bring from their context of meaning to each situation of meaning; and the meaning-work that participants do to negotiate their inevitable differences. The interests of participants in meaning are never simply shared. Perhaps the not-sharing is in small ways. Or the differences may be major in the case of fundamental misunderstandings. The non-alignment can at times be gross. Sometimes the differences are mutually beneficial. Other times, the one interest can be at the expense of the other. We classify the negotiation of differential interests in the processes of meaning into several kinds of appeal: rhetorical, programmatic, reifying, sociable, and transformative.