There are no theoretical limits, but obviously at some point the size of your list might not be the easiest to navigate. How many items do you plan on having?

After 25 years of collecting DVDs and TV shows, I've got thousands of discs lining many of the walls of my apartment. I had to put them all in paper sleeves LONG ago to be able to fit them all. As it is, I need to have a list/database to even know what we have. DVD Profiler did that amazingly well for many years, but now I'm having to manually create nearly 3/4's of the entries which is incredibly time consuming. So far, I've found everything in my collection on TMDB. I'm marginally concerned that there doesn't seem to be a way to create a manual entry for anything that might not be in TMDB, but perhaps, I'll just keep track of those on the old DVD Profiler db.