Useful but has some major irritants - each time it is used, it requires a sign in process, despite clicking the buttons for 30 days etc.

It doesn't work!
The web clipper keeps telling me to log in my account (China server by default I guess), even though I have logged in my international account.

Doesn't work on some pages :(

It's broke, the PDF clipping function doesn't work any more :-(

The clipper sometimes crashes and, most importantly it doesn't work properly with GMail.

pls fix the bug,clipper cant be used in some sites like csdn druing browsing firefox pages.

18/03/2019
Using Firefox Quantum on 65.0.1 (64 bit).

Doesn't work. Get a notification asking to reload the page. Reload page. Get a notification asking to reload the page. Reload page. Get a notification asking to reload the page. Reload page. Get a notification asking to reload the page. Reload page. etc.

Would not install on a different machine earlier this week (no Elephant icon; no sign of add on in menu).

The firefox version of this clipper is slow, and is frequently reported as slowing the browser.
That said, the Evernote Web Clipper's excellence is why I use Evernote rather than OneNote. It auto-finds the notebook my clippings should go to, has multiple choices about what to cut, and is a pleasure to look at.
If the speed could be fixed, I would give it five stars.