Rated 4 out of 5 stars

Great on desktop (Mac) but appears not to work properly on Android (FF Beta 15). Really hope the kinks are worked out of it for Android so that it works smoothly on all platforms.

This review is for a previous version of the add-on (0.3.452). 

Rated 5 out of 5 stars

The latest unstable version (availabe from github) had a major overhaul appearance-wise and it looks fantastic. Great plugin. No longer has troubles with scanned image pdfs (e.g. from jstor).

This review is for a previous version of the add-on (0.3.175).