The ads are back ...
I have recently accepted the gracious invitation to 'upgrade' to Firefox version 15. In the process, the much appreciated Adblock add on seems have been banished, and the ads are back.
I see that there are about nine different options for re-installing it. I would appreciate any advice / direction as to just what to use this time around; preferably something which is free from adverse side effects.
Thanks in advance (and for all the good stuff which is so generously shared in this forum),
FoR