I had a guy tell me that my starting price was too high on one of my ebay auctions and gave me a lowball offer. Too bad for him someone had paid my "buy it now" price the day before, which was $200 over my starting price.

Also had a guy totally spike one of my ebay listings with a post on an email list. Pretty sure I was horning in on his territory and he was just posting misinformation. Still have that stuff, gonna throw it out I guess.