I have extra metadata (true/false) for taxonomy terms. What I'm trying to accomplish is give this field a value for new terms created by users (it doesn't matter if that value is true or false, just matters theres a value).
This tag metadata field would act as a "flag" for these term, letting me know that they were created by someone other than me. I then would be easily able to prevent those terms from being loaded again for other users before I looked at them.
You could think of it as quality control.