I try to use it but only three times.

This add-on works on many sites that other downloader plugins don't, and vice-versa. It's not 100% but one essential tool for me. Would be 5 start if you could specify the download path before starting the download to avoid the risk of accidentally canceling it when it pops of the save as box when the download completes.

working fine but ı have privacy and security concern.

Jest OK, używane w youtube.
- add-on pobiera max 720p i trwa to długo (60 KB/s) .
+Jakość jest dobra jak na 720p i nie dodaje żadnych znaków wodnych.

Скачивает много нужного. Но не все. Но многое. Спасибо!