Numerous duplicates of show
Rather than listing each, this is the search I used:
I wonder... for prevention ... if there might be a way for the database to identify existing duplicate IMDB and TMDB IDs. Also, possibly a check when adding a new entity for existing entities with the same IMDB ID. Not that you would explicitely prevent such things, but maybe add a warning that you are about to add an entity that has an existing entity matching the IMDB crossed to the TVDB and/or TMDB entity you are attempting to add. As a free user, I am limited on what I can do to help, which seems odd as user help helps you (and free users helping is a method of return to you), so just trying to think of ways to improve the data.
Removed all which looked to be invalid.