Thanks for responding! It's a good idea to check, I think. I still have no idea how this happened, or if it was all at once, or an item at a time over a long time. It's kinda disturbing to me. Now I'm checking my listings every day. My sales had slowly dropped off over the last several months, and I figured it was only because I'd not put out anything new lately. Now I wonder if I'd been gradually "losing" listings all that time.