Giant from the Unknown (1958) keywords

@jay_spirit​ This is an interesting case with some interesting keywords. I wonder what justification might someone have for deleting those keywords, or was this pure vandalism?

I think "thousands" of keywords per title would be way too many. I'm only aware of a single title on IMDb that currently has more than 1,000 keywords, and that may have been the result of keyword spam -- I can't say for sure because I haven't watched the movie. If it were in fact appropriate or viable for titles to have thousands of keywords, then we would see at least a few titles with that many keywords.

In my opinion the sweet spot for a full-length movie is about 250 keywords, give or take 50. It is not uncommon for very popular movies that have a lot more people contributing to get up to 500 or 600 keywords, which is sometimes appropriate but sometimes inappropriate, depending on the keywords. I guess my overarching point is to focus on quality of keywords rather than quantity.

There is also a real danger of "keyword spam," where users apply dozens of "orphaned" keywords (keywords that apply to only a single title on IMDb) or apply dozens of duplicate/synonym keywords all to the same title. That can make it hard to sift through the keywords on the actual keyword page on a title (I mean keyword browsing, as opposed to searching). 

As far as your question about restoring keywords to Giant from the Unknown, you could always add back the 10 keywords that you noticed that were deleted (if they are in fact relevant keywords). 

@keyword_expert​ 

I agree 💯 about the orphaned keywords; they are useless.

The reason I believe there should be hundreds, if not thousands, of keywords per title is because of the way the system is designed.

If I want a list of all the titles I've seen that deal with amnesia I need to search the keyword amnesia. But many relevant titles may not have amnesia because a contributor thought that an overlapping keyword like amnesiac was sufficient.

In fact, I believe that a number of contributors are so convinced amnesiac would be sufficient, they would delete the keyword amnesia if the title had both. That's their idea of eliminating redundancies.

How many titles have murder but not killing? If I search for all the titles I've seen with killing in it by using the keyword killing I'll have a very incomplete list.

If you keyword a title with an eye toward adding anything that a contributor might search for I think you'd find that just about any full length title could easily have hundreds of relevant keywords.