I just accidentally stumbled upon a new feature / keyboard shortcut that I didn't know about in Mozilla Firefox. Its called Clear Recent History and it is a way for you to clear only a short range of your recent browser history.
If you press ctrl-shift-del then the following window is displayed:
The selections give you the option to delete the last one, two or four hours. Or for a more drastic approach you can also delete the whole of today or everything.
From looking at the official documentation it looks like it is a new feature added in to Firefox 3.5.
At this time of year it could come in pretty handy to clean up your tracks after you have spent the last hour shopping online and it would also log you out of Amazon which can be a big surprise spoiler if you're not careful!
- http://support.mozilla.com/en-US/kb/Clear+Recent+History - Official documentation
If you're a Firefox user then please consider checking out my Firefox extension called "Good Deeds".
Its a simple extension which loads up a website called TheRainforestSite.com once a day so that you can click the button on that page. Every time you click that button the advertising money which is earned on the following page is contributed towards saving the rainforest.