If your think about it, it would not hurt Plat slaes one bit. Receiving something in return say a small percentage of what you paid for the item or a small amount of credits would be much nicer than a big fat 0 if you are to discard a plat item. And no you can not share these items with other accounts, you can use the items on alts on the account you originally purchased them on.

If you were to get anything back for discarding these items whether its Plat or credit, it would most likely result in more Platnum Gear purchased. It sure wouldn't hurt the sales. Touchy subject I guess.