The document discusses data portability and linked data spaces. It argues that data should belong to individuals rather than applications to avoid lock-in. Data portability allows data to be accessed across applications through standard formats and by reference using identifiers. This helps address issues of information overload and the rise of individualized real-time enterprises as people use multiple applications. The document presents an example data portability platform called ODS that exposes individual data through shared ontologies, allows SPARQL querying, and generates RDF from various data sources.