Doesn't react at all.

It just opens a link to the Clipsave website, which downloads it. Just bookmark the website and delete the extension.

Useless.

Doesn't work. Tried it on several computer but the results are basically the same. Waste of time. I'm dumping it.

Na stronie wyraźnie jest napisane, że rozszerzenie pozwala ściągać filmy prywatne. To nieprawda. Generalnie to jest bezużyteczny badziew, bo nie działa ani z publicznymi ani z prywatnymi filmami. Rozszerzenie usunięte.

The site clearly says that the extension allows you to download private videos. This is not true. In general, it's useless crap, because it doesn't work with either public or private movies. Extension removed.