It's gotten bad since all the different versions with languages got added. It downloads two copies and none of them work. Just keep it simple and stop adding the pointless languages.

It's very good! It would be better if we can choose the folder where download the file.

Fails constantly. File tries to form but then ends u 0 bytes. Has been worthless for a long time

Easy to use

It's not working. At all. Don't know what I need to do to make it work, but it's not working.

A very good extension, when it works. As soon as YT changes it algorithm, it stops working, and you have to wait or a fix. MP3 sometimes works, and now also the mp4 mvie downloads have stopped. Bummer

every time I download firefox. this extension has to be download.

March 17th...UPDATE: As for it being reliable it isn't. Sometimes it works and sometimes not - that's been my experience and the experience of others with who I've spoken in the last few days...
One friend said the paid version isn't working either. I can't speak to that since I've never used it and as such have no experience with it, but this friend and several people he knows do...