Extensible Markup Language (XML) has gained great momentum and is emerging as the standard for data exchange on the Internet. XML data is self-describing through content-oriented tags. One of the strengths of XML is its extensibility, anyone can invent new tags for particular subject areas and can define what it means in document type definitions. This strength, which attributes to personalization, at the same time, is a hindrance to interoperability. The article examines the relation of personalization with interoperability, and evaluates its reverence in the context of data exchange between machines. Resource Description Framework (RDF) is a foundation for processing metadata for providing interoperability between applications that exchange machine understandable information. RDF imposes syntax and structural constraints in describing resources in order to avoid any ambiguity in expressing metadata so that it becomes machine-processable. The article presents a model to provide dynamically created machine processable user profiles to web servers.