I can define distinct Profiles, to control which Identities are visible when

(User Story, Investigate , Priority: Medium, Test Status: No automated tests yet , Reported By Justin du Coeur, )
Summary: This still needs design, but a number of folks have pointed out that having distinct identities is lovely, but I need to be able to define that, for instance, notifications about one's kinky private life shouldn't come up on my screen when I'm at work.
The implication is probably that I can group my Identities into Profiles, and define how I receive which Profiles. That may include both pull (when I'm at work, only my work Identities should show up) and push (work notifications don't bother me on my phone).
See this comment for more suggestions.