Dual Monitors Rated 3 out of 5 stars

1. Cool & Useful! Thank you!

2. Design - bad. No Dual Monitor Support > Firefox window is on Monitor-2, Notification appear on Monitor-1.

This review is for a previous version of the add-on (2.0.2). 

1. Thanks for the support :)
2. The version 2.1 supports dual monitors. It lets you choose the monitor where the notifications appear (so please consider to change your rating), but if you mean that notifications should be on the same monitor where the Firefox window is, I totally disagree.