Rated 5 out of 5 stars

Still going strong for Firefox 18 and one of the easiest tools of it's kind to just toggle on and explore page structure.

Someone should fork it and add extended attribute detection for CSS3 and browser specific CSS.

It also would be awesome if the wider/narrower keystroke found in the adblock helper could be adopted into this.

Rated 5 out of 5 stars

Awesome extension (better than webdev version) that is sadly not developed anymore.

Would love to see someone add CSS3 rules - the Chrome port added CSS3 support, maybe that can be copied back over.