I have one or two security / privacy concerns about this, but it might make source-chaining for blogging a little more straightforward. TipMonkies point out a new extension that can remember how you got to where you're at:

The "How'd I Get Here?" extension keeps track of how you got to a particular site for you, even if you opened a link in a new window or tab, and even keeps track of how you found a site you bookmarked earlier on in the day or even the day before....Please note you must have Firefox 1.5 or newer for it to work.

Filed in: webtech, firefox