Feedback

I have wrote about this before and cannot understand why people do not leave feedback.To me it is only good manners to say" thank you"when you recieve a service and this is what feedback is a thank you.It is also beneficial to both the seller and the recipicant because it is saying" you can trust me".Sometimes when I am buying I check peoples feedback and if I am not satisfied I do not buy.So please in future would ALL buyers and sellers leave feedback for each other it only takes a few minutes.