Rated 5 out of 5 stars
One minor problem. I would like to right-click on a selection, and then without releasing, drag the mouse down to the 'convert selection to QR code' menu item, then release the button. This doesn't generate a QR code. (Instead, I can right-click, release the button, then select the menu item with the left button.)
I note that other addons (Firebug) allows the behaviour I describe. Note that I also have Right Links 0.3.8 installed.