Rated 3 out of 5 stars

It works as expected but I would prefer foulders for each source and a button as the other plugins and this page appearing when clicking it in small (just such as neat bookmarks chrome extension).

This review is for a previous version of the add-on (3.0.2.1-signed). 

making it possible to put the sources into subfolders is certainly a good idea - i am going to implement that in the next release - thanks!

what do you mean by "a button as the other plugins and this page appearing when clicking it in small"?

greetings - coderect