Firefox has always had the option of forcing a link that tries to open in a new window to open in a new tab. Reader J writes in with a good reason to take it a step further. J configures Firefox to force links that try to open in new windows to open tabs in the background, instead. J explains:
Tabbed by Kyle Hubbs Lyrics are unofficial
via Bella Ciao Chords.
via The Cure – Lullaby.