They seem to be marking the items private, not the feedback now. I bought something a while ago, and when I looked at the feedback I left, it's marked private. I can't figure out what it was, lol. I KNOW it was not something I'd consider private. I only buy comics/books, packing supplies, that kind of stuff on eBay.
I won't let anyone with private feedback bid on my auctions, I had a disturbing encounter with someone who had private feedback eons ago. It stuck in my mind. The person actually called me and threatened me with a neg if I didn't send him something extra.
I dropped stating it in my listings not only because I wasn't running into those folks so much but to streamline my descriptions and avoid a wall of text. However, I would most likely bounce anybody with PF who tired to bid.