We have also experienced a nutter that has tried to destroy us on a few websites....just because he has taken a dislike to us.....luckily most saw through the garbage that was written.Trying to make our reputation as bad as his!
i've got no idea who you are referring to, but,as you say, there's always three sides to every story.
the problem with considering people to have a good reputation, is that their mate's or their pseudonyms can just as easily give a person a great rap to give him/her credibility as someone with a vendetta can do the opposite.
friends often join overseas websites, just to give their mate's a pat on the back, even though they have already done it on the same thread with the same photos on every website in australia.
a lot of people set up a web-site for credibility, they promote themselves only to new people to the industry ( who aren't aware of their past ), or are self-proclaimed gurus who have a dozen of their mates vouch for their greatness. this would subsequently intimidate people aggrieved by their dealings from coming forward.
the lesson really should be suss someone out first, if you have a bad experience, be more careful next time, and if you join a club, get to know the breeders. it's pretty easy to pick out those doing shonky deals over in the corner, and those that always have something under the table to move.
take responsibility for your own deals and vouching for people inevitably causes regrets as other people can let you down.