Your saved choices
My List, episode checkpoints, the chosen viewing country and recently browsed titles are stored in this browser. They are not an account shared between devices. Clearing this site's browser data removes those local choices.
Images and external links
Movie artwork is loaded from TMDB image servers. Watch now opens JustWatch, and a later viewing service has its own privacy settings and account policies. Requests to outside sites are handled by those sites.
Keeping or removing a list
Make a backup before clearing browser data if you want to retain saved titles. Recently browsed has its own clear control. It records opened title pages, not proof that you watched a film.