I am looking for a way to have a keyword or tag that is not see on my title/description page but that can be searched for when someone searches in my eBay store only. Only for someone who is given the exact search term to look up. Example, I list 3 items and have the hidden keyword/tag as "GZ00111". This will not result in any items being brought up for a search on ebay currently, but I would like the 3 items to pop up when someone searches my store for "GZ00111". Any help would be great. Thanks!