Account switcher

To kind of supplement my last idea posting at:

http://ideas.omniture.com/t5/Adobe-Idea-Exchange-for-Omniture/Log-out-to-common-domain-my- omniture-com/idi-p/3719

...I wanted to mention the idea of an account switcher, similar to what Google now allows you to do when you have multiple accounts.  Basically it would be a dropdown at the top of the screen that lets you select which account you're logged into.  I'm not sure of the best way to implement this, whether it would end up being similar to a single-signon hosted by Adobe, or whether it would simply remember multiple session cookies and switch between them, but the ability to switch would be very helpful for those of us who work with multiple clients.