Duplicate Tab in Firefox

I have used Firefox for a long time. Just wonder why there is no such thing as duplicating a tab. This action is similar to Ctrl-N to duplicate a window.

With Firefox 3 (actually I am using 3.0.4 today), when you right-click on a tab, there is still no such feature. However, there is really a duplicate tab functionality in Firefox 3. All you have to do is to :

1. Hold the Ctrl key
2. Drag the tab left or right. While moving around, an arrow will appear when crossing the border of the tabs.
3. Then, when you release the mouse button, the tab will be duplicated and inserted in that border.
4. Now, the last thing to do is to un-hold the Ctrl key.

If you make the above steps in another sequence :

1. Hold Ctrl key
2. Drag around
3. Un-hold Ctrl key
4. release mouse button

, this will move the tab in Firfox 3.0.4.
(Noted that in Firefox 3.0.6, you can simply drag-and-drop the tab in order to move it.)

Now, my wonder is : why don't just make the whole thing more simple ? Maybe just right-click on the tab to pop-up a menu to choose [ duplicate tab ]. Then, simply duplicate the tab at the rightmost. This is far most user friendly than the existing Ctrl-key-drag method.

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