A third-party profile service based on a proxy server model is described, where a user's profile service resides at a URL, in contrast to a profile service that requires federation identity. A profile service is provided that augments location-based services offered by service providers targeting mobile users via, for example, wireless and Wifi Networks. Additional personalization is driven by identity/profile services. Participants in the scenario are not required to share an identity or profile (i.e., static federation is not required). The user establishes a single profile with a trusted provider, hands-off solicitations to a profile agent that operates on behalf of the user to apply policies and preferences. The agent also provides privacy and anonymity (opaqueness).