I totally get that!
Before I reach 100 fb, I too was so eager to receive fb that I thought I deserved. It is important to establish ourselves on a market place and the only way to do that is exactly that.
I don't understand why some here say that seller leaving fb is not important!
It is true a seller can not leave negative, but they can still say if a buyer was easy to deal with/ pleasure to do business, etc...
When a buyer makes an offer on my stuff, I always read fb received as a buyer..
I even contact past sellers that I see left fb, and ask more details about the buyer before I accept their offer. specially on International deals.
How can I contact a seller to ask for help and some more insights if all sellers think their fb does not make a difference or is not important and don't leave any??