Whenever I sell something here, I usually leave feedback for the buyer when I get the payment, as I believe the buyers part of the deal has been concluded, and most anything he does from that point on won't change that fact. I've only had one transaction where I've left feedback, but never received it in return. Never really bothered me though. I have noticed that when I first started buying on ebay, I would usually receive feedback not too long after I've send the payment out, but these days I have to give the seller feedback before I receive. The whole "if you give me negative feedback then I'll give you negative feedback" mentality is ruining the whole feedback system IMO, as some people are giving positive feedback just to avoid their perfect records being tarnished even if the transaction was a bit sour (referring to eBay). That has prevented me from posting negative feedback on eBay on several occasions, as I really don't want to go through the whole dispute system to have said feedback removed. Fortunately all the transactions I've had on head-fi have been nothing short of excellent, which is a testament to the quality of people that populate this little spot on the internet.