Are you still using the right click and open the page in the new tab? ok, i have to say you are out! try this, drag and drop the link and open link in the new tab and save you a lot of time.
You also could change the option in option window to customize your Extension's option,you can set the link option to
--Open link in new tab (Default)
--Open link in current tab
--Open link in new tab and select the new tab
I'm busy, so you can find source @ https://github.com/GuoJing/Firefox-DragUrLink