My 2¢ as a buyer goes like this. I pay when the auction ends (if I win it). Really don't care if the seller leaves me feedback or not. When I recieve my item I'll get around to giving their feedback.

What gets me is you get these Newbies on eBay and they remind you to give them feedback, why is it that important to you? I deal with Power Sellers and they don't remind you.

As a Seller I'll give feedback when I'm paid and really don't care if the buyer gives me feedback or not (some say they will but never do). I'm not losing sleep over it