Well it is a good thing I don't buy stamps on ebay then, isn't it?

Why are you so against Private feedback?   Some of us just prefer that the snoops on the boards cannot see what we are buying...if they are really interested they can do a search of our current purchases but I personally don't make it any easier than I have to.

There are lots of reasons for buyers to have Private feedback.....they don't want the world to know what size clothing they buy, they might buy expensive collectibles or jewellery (I buy both)...there are numerous reasons.

It really does not worry me personally if you or other sellers do not leave feedback for me...with well in excess of 10000 individual comments I don't need it.  But you will find that a lot of buyers will react in kind and not leave you any feedback either and it hurts you as a seller far more than it will hurt the buyer.