Does not work with Firefox 22+, replacement exists Rated 4 out of 5 stars

This addon, although nice, stopped working with the recent Firefox versions. Its author told me that he's willing to develop it, however currently there are no official updates fixing this.
I've fixed the problems in my version of this addon. It's called Digest and is available at this site.
https://addons.mozilla.org/en-US/firefox/addon/digest/

This review is for a previous version of the add-on (1.6.2.1-signed).  This user has other reviews of this add-on.