I think it would be cool to say you've watched a film with someone else, and that could show on their diary, just a little idea, more just for me and my fiancee because we both really enjoy the progression that letterboxd gives you when watching a film but she often forgets to make entries, however I'm a frequent user, so it would make it easier for us for me to make the entry, tag her, and it appears on her diary too.
I think it would be cool to say you've watched a film with someone else, and that could show on their diary, just a little idea, more just for me and my fiancee because we both really enjoy the progression that letterboxd gives you when watching a film but she often forgets to make entries, however I'm a frequent user, so it would make it easier for us for me to make the entry, tag her, and it appears on her diary too.