Rated 3 out of 5 stars
I'm only using the "HD Suite" and "Lights Out" functions. The former makes videos HD by default - as opposed to having to manually select HD quality - and the latter gives me the option to grey out, or turn completely black, the whole website around the video. All other features of this add-on are either useless or broken, with at least one of them rendering videos unplayable.
I would use the "Autopagerize" feature, which automatically loads results from the next search page as you scroll down, but it stops showing thumbnails for videos after the fifth search result of each page.