Still a substantial design problem remains with Google+
popalg.org
popalg.org
As Google+ is more focused on having a "real name" like Facebook is, will throwaway accounts work as well? The suggestion in this article is interesting, though I'd worry about excessive UI complexity. Then again, if Google were to let you create multiple accounts that ended up as sub-accounts (or just call them "roles" as in the article), one could elect to either follow an entire person or just one of their particular roles (if multiple roles exist).