Rated 5 out of 5 stars

It is very simple but powerful in right hands.
Helps me to bypass one site's anti-adblock mechanism.

One annoying thing in filter editor: it disables filter after save and I have to either close editor or go to options and enable it. It would be great to have "Apply" button in the editor.

One more note: it would be good to have a link to regular expression guide/howto/short description. Or at least say what kind of regexp supported.

This review is for a previous version of the add-on (1.3.2). 

Thank you for review. Glad to see that you found this useful.

Try 1.3.3b3 from dev channel, it asks to enable on save.

It's about ordinary javascript regex, but without substitutions.