This add on is some kind of malware where they are either stealing your data from your computer, or downloading malware to your computer. If you download a Ytube video, which it often has to restart multiple times taking hours, after it's done downloading it has a message that says 'aggregating...' or 'preparing converter...' even if you didn't choose to convert the video. That process shows it will take *another* five hours to change a short one hour video. This is unnecessary and can only be an excuse to use the time to steal data or download malware onto your computer. There is NO process that needs to be done to a short one hour video file that takes five hours. It's like those old malware keygens from years ago that came with 'cracked' software, that said 'generating keys...' while the key was already ready and the programs were just using the time to download the malware over your slow dial-up connection. THIS ADD-ON IS SOME KIND OF SPY OR MALWARE AND HARDLY WORKS MOST OF THE TIME ANYWAY.