When you watch a new movie or tv show, do you keep track that you watched it so that you don't re-watch it later? It's why I use letterboxd and serilizd, which are services to let you track the movies and shows you watch. I mostly use letterboxd as I watch more movies than shows. I like to keep track of all the movies I watch as I sometimes forget what I saw, and don't like to re-watch something unless I really want to.