I sold a few things this week which ended last night, as usual when ive posted them out i add the tracking number and sent a little message long the lines of letting the buyer know item has been sent, should be with you soon, any probs let me know so i can sort them out, and id appreciate if you could leave feedback so i know its arrived safely.
1 seller email back almost instantly saying and i quote, " I am more than happy to leave positive feedback for a good transaction where the seller sends the item out quickly and i recieve it in a clean good condition, I rarely give negative feedback but when i do its because the people i am dealing with are stupid or they think me stupid. either way i hope this is not the case here!!"
I must add his name was tim and he'd purchased a blue mini skirt from me 
everyone else usually replies yep no worries will do, Just think it was an odd thing to reply back with, i'm almost certain looking from the feedback i will now get negative as he has made up his mind already (lots of negs left by him over stupid things, took 2 days to turn up etc). Sorry he bought it now.