Update: it's 'kind of' there already: person, employer, organization, company, job, role, vacancy are all on the map. I confess I haven't indicated that anyone might actually be in a job. I've been writing so long, I'm beginning to forget what that's like, despite daily reminders from Mrs. Woo. Euan Semple wrote a book called 'Organisations don't tweet, people do'. I think it's the same thing for membership of communities. If someone came on here as 'Social Media Rep, BigCo', I think we'd ask what their real name was, in case someone in the 'trust network' we're building here already knew them. I guess you need both.
I've noticed that most political parties don't believe this point though, so please tell me if I'm wrong. Only my Conservative candidate tweeted in his own name, but he won.