1. At a client computer system in a computerized environment, wherein the client computer system employs a type system having one or more types, a method of processing a serialized XML document that includes typed schema elements and non-typed schema elements, comprising the acts of: receiving one or more serialized XML documents over a network; identifying one or more known schema elements of the one or more XML documents via one or more XML feeds, wherein the one or more known schema elements correlate to one or more known system types at the client computer system; identifying one or more unknown schema elements of the one or more XML documents, wherein the one or more unknown schema elements do not correlate to the one or more known system types; providing a deserialized form of the one or more known schema elements to an application program; and buffering the one or more unknown schema elements in the serialized format received via the one or more serialized XML feeds.