But, to flog a well dead horse, seller feedback reflects on the seller's business practices and consequent ability to sell. Buyer feedback reflects on how much stuff the buyer bought that they got positive (only option) feedback for.   The name is the same, but the animal is of a different species. I agree with k1ooo - you don't really seem to have a grasp of the difference.

That is one perspective.

Belinda has another.

I have a slightly different perspective again.

I don't give a toss about buyers feedback as a measure of how much they (or I have purchased). 

For me buyer feedback is very important - it serves as a way to communicate with my buyers, without clogging up their inbox with another ebay message, it is a way for me to say thank you for their purchase and payment, rate them on the speed of their payment and put in public visibility the date I have posted - as the silly click and send system marks items as posted when they have not been.