Update: 10/31/23: I'm still seeing reviews about watermarks. I still have no watermarks. VDH is still the best by far video down loader on the web and I'll stick by this until I see otherwise.

January 2023: I saw a review that said VDH puts a big watermark on the video after it downloads. I personally have not experienced this and I've been using VDH for over 7 years now. So I guess I've been lucky because Video Download Helper has never been anything but good to me and during that 7 years, I've tried other add-ons and VDH is by far the best I've ever used.