Dear Google+ (and Google in general),
Some day, I pray that you figure out how to fix your horribly broken authorization systems for multiple accounts. There are security industry experts who know how to do this, you have lots of smart employees, and yet you consistently ignore every best practice in the book.
For example, my company has "gone Google" (and don't even get me started on the various disasters there), so I end up being logged in to both my personal and work Google accounts. It appears that one of them is the "current account" as far as Google is concerned, although it's not clear on what basis -- it definitely isn't "last used".
When I try to go to G+, much of the time I get "Google+ is not available for your organization ([company domain]). Please contact your administrator to enable this service." That's it. No little selector to choose any of the other logged in accounts, just a dead end with no links at all.
When this happens I have to spend several minutes fucking with things before eventually logging out of my work account entirely to try to get to G+. This usually works.
WTF? Why is this so hard for you?