Sort of works Rated 2 out of 5 stars

I don't know.. you say to it replace "foo" with "bar" - bar appears on the webpage but foo still appears in the source. So
if "bar" is something you want the browser to do, like a redirect, nothing happens. Then you get bored trying to figure out
how to make it work..

This review is for a previous version of the add-on (0.4.2.4). 

A little more detailed description of what is not working would help to improve CYW.