I love Firefox so much because it can be configure easily using extension. Extensions are small add-ons that add new functionality to Firefox.
One of extensions I downloaded lately is ScreenGrab. It allows you to take screenshots of web pages. Whats so cool about that? Well it captures the entire page not just the part viewable in the browser window! Its even cross platform!
You can see an example of the front page of Slashdot created using ScreenGrab here (636KB, PNG)