Rated 2 out of 5 stars
Using it with more than 10 tabs open can be painful. (It freezes redrawing whole firefox, unless you start moving your mouse over it, drop down menus sometimes completly stop appearing (only the shadow is being drown for example) and many more issues).
Its a CPU Hog. Without i can have like 200 tabs opened and 30 clips playing on youtube at the same time and with it its hard to brows internet at all not to mention watching any videos.
Also- sorry for my bad english.