According to a study by Forrester Research portable profiles are an emerging trend. These portable profiles do enable users to use a set of login data at various services and to represent themselves by just one profile. This, too, will affect the design and the perception of webbased services, which will be recognized just as being active in the background.

Forrester: Social Web To Evolve Due To Portable IDs

Directory Sources: Business Networking, Document Sharing – Social Networking