I agree insanity--- it takes a little work on my part to encourage peopple to leave feedback; they don't know how to do it, at least not the first time. Many steps to get to the point of actually leaving appropriate info.
I never thought about leaving info for the actions of the buyer, until recently--I looked at my rating info and realized the sellers I originally worked with a couple years ago left info on me as a buyer.
Ratings are important-- it is the the little push to help resolve issues in a productive manner-- a method of accountability.
So you wanna buy some eggs from me???? lol