"But as it was midnight and I am not what you might call an experienced Google+ user, by the time I figured out how to actually post something I had somehow switched accounts."
Uh, well Google: start there. I see about three things that could use some attention (Google+ adoption, usability and multi-account issues with Google and Google Apps)
Well, Google has always had internal accounts for most of the services that are tied to your Google Company account. I don't know if G+ works this way, but I would assume that the problem isn't something that G+ user would encounter until Google releases Google+ for Google Apps.
Until Google Apps support is released, I find it unlikely that Steve's error here will be encountered by many other users. Most Google+ users don't have access to a separate instance of Google+ to trip them up.
I also think it is unbelievably foolish to suggest that "Google+ adoption" needs attention because of this. Why on Earth would you judge inherently aggregate metrics based on a single individual mistake?
When their bonus is tied to the success of the company in social software, you'd expect them to use it. No? If Google is trying to make an identity play, shouldn't identity start at home?
Most people make enough money to not need a bonus, so they might value spending their time not caring about Google+. I could make a lot more money as a hitman than as a programmer, but for some reason I choose programming.
"But as it was midnight and I am not what you might call an experienced Google+ user, by the time I figured out how to actually post something I had somehow switched accounts."
Uh, well Google: start there. I see about three things that could use some attention (Google+ adoption, usability and multi-account issues with Google and Google Apps)