Great! + a question ... Rated 5 out of 5 stars
This Add-on is one of my favorite, I store lot of data with it.
Moreover it allows to clean the stored pages (remove parts, highlight texts, etc ...)
I have stored so many data that I wanted to copy these data to an other computer not to loose them. I did not know the directory where everything is stored.
I modify the text of this review because I have just found the reply to my question:
Sidebar -> tools -> Open Data Folder
So you have understood that I use this great tool for making my own wiki... That involves it has no major flaw!