I think there are a subset of tags that we can make easier to use by dropping the "users" portion of the tag. I propose the following:
user-retention be renamed to retention (16 existing questions) I think the "user" is implied and not needed. When a question is about retention, it is about how a user (or group of users) can be retained
- expert-users be renamed to experts (1 existing question)
- Again, I think the "user" is implied when discussing exerts within the community.
- user-engagement be renamed to engagement (11 existing questions)
- The questions in this tag are about how to increase use participation via certain actions. The "user" is implied.