New answers tagged imdb
If it is the new site of IMDB then the "Add to watchlist" icon is just in front of the movie title. See the image below:
Next to the movie's title, there should be an icon which looks a bit like a ribbon with a plus sign in it. If you mouseover, it should tell you what it does. Click that to add it to your watchlist. If it's already on your watchlist, it'll have a green checkmark. Click to remove it.
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