Rated 5 out of 5 stars

I want to retract my original review a few posts below this one. At the time, it appears youtube was doing a lot of maintenance and upgrading. For some reason I was effected by this more than most for a longer length of time and the issues were constant. The problems I was experiencing were due to the youtube site, not this app My videos would stop loading at the start & then all settings would disappear...and it started happening the same time I installed this app, which is the same time youtube began doing upgrading and maintenance. I originally blamed the app for the issues. Anyway 3 weeks or so later, everything seems to have corrected itself... youtube seems to be stable and now everything is working great, including the app. Works like it's supposed to and is insanely useful and eliminates constantly having to change the quality setting. This app is highly recommended...works flawlessly and never fails

This review is for a previous version of the add-on (4.3). 

Not working Rated 2 out of 5 stars

I'm using Firefox 17 on Windows XP SP3. Installed this addon thinking it would just simply change whatever video i'm watching on yt to the highest setting. Not sure what i'm doing wrong, but since I installed it, my youtube videos are smaller, regardless of what settings I try to use. It also deleted the half full screen option on all my youtube videos, so it's either watch it in standard size or full screen. This addon also seriously lacks customizable options, uninstalled for now

This review is for a previous version of the add-on (4.1).