Answer: we don't yet have questions with the [tag:hack] tag covering these, perhaps the only common uses of the term not included.

[tag:hack] and its synonym [tag:hacking] are undefined and have 44 questions.  The term is used so loosely, it isn't clear that it is a useful tag.

 - Is there a useful definition that would serve a purpose on the site to provide context or focus, or attract knowledgeable answerers?
 - Should we clean this up?