I use the convenient QUICK FILL option provided by the Marketplace as most of my newer listings have updated info about my products, customer service, etc. and I usually copy these over to newer listings and just edit or remove keywords and such as needed.
I started noticing that my newer listings all show up when searching for "Panda" because the Panda Furry Mod in my store is what I've been using to "Quick Fill" and edit the newer listings. Yes it says "Panda, bear, ursine, etc." in keywords but I go in and remove those to "Rabbit, Lapine, Hare, etc." When someone searches for Panda in my store, all other newer mods that used that Quick Fill option show up as results even though there ARE NO KEYWORDS for PANDA in the keyword boxes for each listing. I have been recently flagged for "Spam" and "Misleading keywords" that are out of my control. This has been going on for some time and I had thought that by now, it would have been fixed.