I can't imagine how usefull and reliable this simple add-on is at such an early stage of development.
I loved it at once! What is especially stunning is how effectively it can clip simpilified pages: it never misses useful content and never copies anything on top. The only three features I miss now are:
1. (that is probably a funtion of Joplin itself rather than Web Clipper) is automatic linking to a source web page in the note where the screenshot clip is copied to.
2. a big push button in the web clipper interface which will switch focus from Firefox to the Joplin with the note that's just been created. Additionally, an option which will make switch of a focus as automatic after clip creation.
3. select text on a page, right click and "send to Joplin". I.e. copy selected page elements to a new note in Joplin