Rated 3 out of 5 stars

I would rate this a 5, but i noticed a very annoying bug since a while..
Entries that i had marked as read, often are marked as unread again, after starting Firefox new.
Makes this Addon useless for me at the moment. So i rate only 3 Stars

Edit.
Will send a Bug report at Mozdev.org, had problems to login to my Account.

This review is for a previous version of the add-on (1.0.9.3).