If you find a work that has misleading, numbered, excessive or long-form tags, there’s no need to report it. Ultimately, artists that use these tagging methods will not help them earn more sales than those who do not.
If, however, someone is using your name or username to tag their products, or you suspect someone is using mature or inappropriate tags on products that target children, please report them using the ‘Report Content’ link at the bottom of the product page.