1. Anyone who bids on an item without knowing exactly what the shipping charges is is a fool.
2. Anyone who was intimidated into not leaving bad feedback by a seller withholding feedback in the former system just needs to realize a couple of things: a buyer's feedback really doesn't matter that much. You can still bid on stuff, even with a few red marks; nothing can stop you. Admittedly, if you're going to leave honest feedback, it was probably better to have seperate accounts for buying and for selling.
3. The integrity of the system has been nil ever since eBay acquired PayPal. I still buy occasionally, but I can't see ever selling again. I guess that's fine with eBay, though; they don't seem to be too interested in the "little sellers" that made them what they are anymore.