don't bother with this one Rated 1 out of 5 stars

Just found out why so many issues with StumbleUpon lately it seems SU has decided to change their format & it leaves a lot to be desired .. Many unhappy users so proceed at your own risk its definitely not the same anymore so time to say bye.

This review is for a previous version of the add-on (3.97.1-signed).  This user has a previous review of this add-on.