Just sharing a quick tip I only discovered recently. I like organizing my stuff, so for example, every product site I have, has multiple email addresses. Think support@ sales@ billing@ etc.
Because I run all my email via Google Apps, I always had to logout, login, logout, login, logout, swear, login, logout, swear some more, login. A pain in the ass if you’re trying to juggle between the lot of them.
So, Google actually lets you sign into three different Google mail accounts at the same time, in the same browser. This is SO awesome. (well, I think it is anyway – saves me heaps of swearing time).
Go here and be enlightened from now on. https://www.google.com/accounts/b/0/MultipleSessions