Rated 5 out of 5 stars

I am confused.
So this extension is like "uc"?
https://addons.mozilla.org/en-US/firefox/addon/uc/

This review is for a previous version of the add-on (1.5.1-signed). 

I don't know much about "uc" but it seems like it is more for running scripts in the chrome. dotjs is for running scripts in the context of the webpages. Almost like greasemonkey scripts, but managed in your filesystem.