How to logout from multiple G-Products

Suppose we are having multiple webpages open, each with a different Google Product. If one wants to sign out from all of them, then one signs-out from any of the webpage and you are off from all of them. There is no way, one can sign out of one of Googles' multiple products and be logged in other Google product, unless you are signed in as different mail ids. Again, one cannot sign into multiple accounts of Google in Firefox....overheard someone saying, its possible with IE, but yet to try that out. Another way one can be signed into multiple Google Products through different mail ids will be to log in using different browsers for each mail id.

If now suppose one is using Google Apps For Your Domain. Say, you are logged into Gmail (and/or other Google products through Gmail ID or Google Accounts ID) and are also logged into GApps account. How to sign out simultaneously from both the accounts (extendable to respective multiple G-products) without signing out separately?

Google uses Cookies heavily for its AJAX renderation. Does this blink any hint? Clear cookies from your Browser, O la la, you are signed out of all G-products, including GApps! Its eaiser to log out in Firefox with the Shortcut combination Ctrl+Shift+Del (note its different from Ctrl+Alt+Del - a Shift shifts the gear). With one key combination, logging out becomes easier.