Linked USDL Privacy Module: An extension of Linked USDL with the creation of a new privacy module that specifies privacy policies and requirements for any business service. More information is available on the website of Linked USDL Privacy.
PrivacySafer: an approach to adapt web applications based on user's privacy preferences. Preferences are encoded in XACML (eXtensible Access Control Markup Language) format. An example can be found here. More information is available on the website of PrivacySafer.