Thanks for response, Miriam 
Google's approach seems very invasive (just to setup a business acct) - too many liabilities from a company perspective (eg, employee leaves, goes to competitor, says or does something off brand).
I have my own voice that represents me as a human, and not as an entity of a company (flaws and all), and if I'm working on behalf of a company, I want a wholly separate history and identity, such as 'Marketing Dept" or perhaps "Jeanie at Dinerware" - I'm actually facing similar dilemmas with other accounts, such as Twitter.
To me, it's one thing to be a marketer and lead discussions, or be helpful to a company audience - and in fact, try to build that audience. But I don't want to be so deeply associated with this one job or even or several clients that there is no line at all between my personal brand and reputation, and that of the company I am managing accounts for.
Something bigger just seems wrong, wrong, wrong when individual opinions and activities expressed online are bound so tightly to companies -- and vice versa - I'm hoping there are simple ways around this - looking forward to any tips
So far, the only answer seems to be to create a totally fictional "person" - which doesn't make sense either...