I tripped upon the ability to do something today that quite honestly has frustrated me for the past several weeks or so. Be logged into multiple Google Accounts at the same time inside the same browser. Sure you can use different browsers to accomplish this – but that’s not what I want.
Follow the directions here. Follow the first four steps on this article here, explaining (sort of) how to do this. http://www.google.com/support/accounts/bin/answer.py?answer=181599
The real key is that first step, which says “Got to the multiple sign-in settings page”, which is here: https://www.google.com/accounts/MultipleSessions
Now, you actually have to at least get into your Account Settings (Google refers to this as signing into a product that supports multiple logins) screen in order to see that when you select the down arrow key by your email address, that you now have the ability to sign in AGAIN as a different account!
Viola! I was signed in as three separate clients at one time. Now this is not flawless – and Google will be the first to tell you that there are some caveats… But still. This just might be the tip you’ve been hunting for.