The downloads are so very slow. I am getting a speed of 29.5 kbps -- horrible. AND, I got an error message pop-up that stated, "Batch download interrupted." The downloads stopped after about 10 minutes. The Firefox status shows that the downloads "failed". You never know what you will get either. Sometimes, you get audio only and none of the video and other times you get the video with the audio in one file. I am going to remove this add-on and look for a different one. If this ever gets fixed, I might try it again.