Rated 2 out of 5 stars

The add-on does nothing aside from changing the value of document.body.contentEditable. You can easily do this with bookmarklets, therefore this add-on is redundant IMO.

This review is for a previous version of the add-on (1.1). 

Of course but...

I totally agree with you, but the objective is to make something more, that only an extension can do, from this simple bookmarklet code.

You can already have a look at the first pre-versions of Page Hacker 2 on my website: http://nicopensource.free.fr/index.php?static/Page-Hacker-en