Yep, I see this all the time.
I download pretty much every marking pack I can find (including several Mass Marking Packs) and just hope for the best. Though sometimes, even after downloading ALL OF THOSE FRIGGIN' MARKING PACKS I still see marshmallow characters. So I click on them to see their bios and yet they don't tell what markings they are wearing or where they got them. It just makes me facepalm and say, "Really? Really? It's like you don't even want us to know what your character looks like."
When I download a weird/obscure marking pack and put some of those markings on my character, I always say what markings they are, who made them, and where they can be downloaded.