Well that wasn't hard to fix Rated 4 out of 5 stars

OK so I just had a eureka moment:
Deleting all the cookies in thunderbird cleared the sign in page for me and i was able to sign into the other account.
great extension, thanks.
5 stars if the behaviour of clicking on links is made more predictable.
sometimes it opens a new tab in thunderbird (which is blank), other times it opens a tab in my browser (firefox), sometimes it loads in the current g+ tab.
Lubuntu 12.04, 64-bit, BTW.

Can't log into different account Rated 2 out of 5 stars

I have one major issue with this extension:
I cannot log out of my account in order to log into a different one.
when i click the logout link the page opens in my browser instead of in the thunderbird tab.
even if i log out with the browser i am still stuck in the same account on the tab as the sign in page has the username written in already and it can't be over written.