My first need for a comments/notes column is for items ordered. The ‘Orders’ tag is useful but lately I have been receiving items other than what I ordered. The additional column would allow me to enter what I expected.
The second use would be for separating items when the tag is used for several varieties of similar items that fit under a tag category.
Third, when the ‘Important’ tag is used I would like to briefly describe the important aspect of the tag.