I just now discovered a feature of Firefox which I never came to know about from any source earlier. You can directly test this if you are using Firefox right at the moment. I am using Firefox 3.03. You may have seen that when you have multiple tabs open, an arrow appears on right side of the last visible tab. And to reach the last tab in the browser window you have to click on that arrow. Just now, accidentally, I clicked on one of the tabs and used the wheel on my mouse for some other purpose but something different happened. The tabs started moving in right to left and left to right direction, corresponding to how I moved the mouse wheel. I think this is a very good feature, as to access other tabs on the window, you just have to click on the current tab and use the mouse wheel to navigate to whatever tab you want to. Also, you have to keep the mouse pointer in the tabs area for this trick to work. Browsing is so much easy and so more fun now :-D