Computer cop at work. I have done a little research myself and I finally found the negative(shown below). This guy still has a 165 feedback. Almost 3 years now.
Apparently Richard is doing a lot more positives than negatives. Of course there is that 5% who are always looking for the worst in someone.

marvamin@aol.com (165) Dec-17-99 05:41:02 PST
216765280

Complaint : Refused to sell item after giving constructive criticism on misleading ad.BEWARE
Response by rickerbbm - THIS GUY IS A JOKE!!!! LOOK AT OUR FEED BACK WHO YOU GOING TO BELIEVE??