Rated 5 out of 5 stars

UnPlug DOES work on Firefox 3, like a charm too. You only need to follow the instructions in the following link and allow "incompatible" extensions to be compatible:

http://kb.mozillazine.org/Extensions.checkCompatibility

I'm kind of tired of spreading this old news every time someone asks "OMG! Y DONT DIS WORK IN MA FF????????"... So, people, start spreading it too!

This review is for a previous version of the add-on (1.6.06).