Rated 5 out of 5 stars

Working great, but you should add option to EXCLUDE site, like Gmail, Facebook, etc...

TIA

This review is for a previous version of the add-on (0.09.1-signed). 

Thanks for review

Exclude sites feature will be in future version.

After version 0.073, you can use ALT+V to instant mark/unmark visited links.

Thank you.