For many years now my task bar sits on the right edge of the screen. In KDE this works quite nicely. Only some applets are not (yet) displaying correctly.
I've also placed my tab bar in Opera on the right side. This has two main benefits:
- You can keep more tabs open (about 50 with the great Breeze Simplified Skin)
- You can read about 20 characters of the page title – regardless of how many tabs you have open
- You have a little more vertical space. As most web sites have a vertical layout you usually do not miss the lost horizontal screen estate.
I suggest turning off Preferences->Advanced->Show close button on each tab. This saves some space on each tab. You don't need the (X)-Buttons as you can close a tab by middle-clicking on it.
There is also a Firefox extension that allows moving the tab bar. I haven't found it within one minute googling, however. If anyone knows its name, please tell me.