I did not know about this service. I just used it for bunch of videos i have in my "to watch list" which is basically pile of shame of material i never get to watch for reasons like questionable useful information density or in complexity of the topic. It helped me to select those i really want to watch and i watched them. Imho this is godsend for creators. Unless you are just click-baiting and luring into watching something that could be summed up into 2 sentences just to go over you list of sponsors.