I ordered a product using [FE] (yes, a bad idea I know now). Anyway it's been several weeks and I've enquired of the vendor twice as to the whereabouts of my product but I have had no response. Am I justified in leaving a negative review and comments on his market page?
yes leave negative response. but leave specific info in the negative review about why you did it. "product was no show, vendor not responding to my messages for several weeks"