That's great!
I have no idea what those are, but a lot of 0FB buyers means new customers are finding those listings.
Some may be scammers of course, but you are protected by your solid feedback and long time activity, which enable you to spot the phonies.
I wonder if eBay has an advertising program that no one has spotted? The dotCOM Seller Boards are filled with complaints that eBay doesn't advertise on television, but those sellers mostly don't seem to realize that eBay is advertising online, perhaps because so many of my contemporaries don't use the internet to the full.