Listing acknowledgments on CV I have yet to see this, but was wondering if others have or if it makes sense to list acknowledgments in published papers on a CV.

In some questions on this SE, it seems significant contributions to a paper can occur, yet for some reason (maybe not contributing to writing of the paper), the person is listed in acknowledgments and not co-author.  This seems like something that is of relevance/importance.

In the other case, acknowledgments can be 'thanks for the discussion' in which it may have been a brief conversation with one important realization through the talk.  This seems more like daily life. 

Some people seem to list their contributions tot he academic community, such as being a reviewer for a journal.  

What would you think if you saw acknowledgments on a CV, or, would it make more sense to categorize acknowledgments into other topics, such as, 'Non-co-authored project participation'.
I've never seen "mentioned in acknowledgements" on a CV, and wouldn't know how to evaluate them if I did see them on somebody's CV.  Acknowledgements are often pretty random and arbitrary in their threshold, and can often indicate a very small involvement indeed (e.g., "Mary was eating lunch with us one day when the project was being discussed, and happened to say something useful").  This is different than something like service (e.g., reviewing), which typically has fairly well-defined investment in time, and is a known burden that needs to be shouldered by volunteers across the community.