Quote -  I often wish that feedback was mandatory the way it is on eBay. Meaning that you CAN get away with not leaving feedback (or GETTING feedback) on eBay, but then few people would deal with you.

i dont agree.
feedback is earned. it shouldnt be mandatory, or it becomes meaningless. the marketplace would be full of:*
*'GREAT PRODUCT SUPER VENDOR!!!11!!!  A+++++++++++++ <('-'<) <( '-' )> (>'-')>' *
*type feedback.
same goes for vendors who sneakily 'reward' customers for leaving feedback.

right now if a customer leaves you feedback you can feel that youve earned it. making it mandatory would devalue it completely to the level of eBay feedback.