I've updated my firefox addon list following moving to Firefox 3. I've started using FireGestures for mouse gestures, you hold down the right mouse button and move the mouse up, down, left or right to execute various actions. The default configuration has far too many options to figure out, I've simplified mine to just a few:
| Previous Tab | L |
| Next Tab | R |
| Close Tab | RL |
| Back | UL |
| Forward | UR |
| Open Link in Background | D |
| Open Link in Foreground | U |
| Reload | UD |
| Reload Skip Cache | UDU |
| Popup Recently Closed Tabs | LR |