Suppose someone posts a question with the tag abc. A second user visits the tag wiki and clicks the Watch tag button. Later, a third user removes the tag from the only question that had it, considering the tag unnecessary. As a result, we now have a tag with no questions, but with a user who is following it. Will this tag be automatically deleted?
Now, suppose the tag also has a full tag wiki, but it gets automatically removed because it no longer has any questions. If a new question with this tag appears in the future, will its tag wiki be restored?
