Very useful Rated 5 out of 5 stars

Very, very useful addon!
The CSS features are great.
Does tend to bog down with some websites with lots of content (or if you have too many windows/tabs open) - so I leave it disabled most of the time. But very useful when you need it.
Just wish I could leave it enabled all the time.

This review is for a previous version of the add-on (1.5.0).