It does not matter if a troll is going to act logically or not. The troll can make their invalid argument then you can respond with logic to counter their argument. Unless they bring up an additional point there is no reason to respond further, if you do then you are only feeding the trolls. If the troll bumps their argument or continues to post trolling without you or anyone responding then you can report the post and it should be deleted and/or they will get banned. If you continue to respond to them then they are responding to you and their posts will likely not get deleted and will likely not get banned. It may not be easy to do this however if you ignore the troll they will eventually go away. Also if you leave a logical response to the troll then your potential customers will be able to see your response and can see that your trolls concerns are invalid (if this is actually the case).
There is no reason for your marketplace threads to be your property. You did not invest any money in the development of the forum nor did you invest anything to get the forum to be as popular.used as it is today. If you were to pay the forum for the right to list what you are selling in the marketplace then it would be a different story, but you do not and it is not. Although it is a good practice to check places like scam accusations prior to buying from someone, I do not think that most/many people do and as a result all that a potential buyer can see is what is on the selling thread. If someone's concerns are not there then a buyer will probably not see them.
Why would I want to waste my day making logical arguments against trolls who don't care? You claim there is no reason to respond further, but the damage is already done at that point. I have reported this type of trolling and it goes ignored repeatedly. Just like you have no incentive to argue for my protection from harassment, neither do the mods. It is a waste of their time and they don't give enough of a shit to spend any time dealing with trolls. As far as people seeing the claim is invalid, not really. Often people here are so paranoid about being scammed all it takes is one empty accusation in the middle of a marketplace op to lose a person's interest.
So you think over 3 years and hundreds of completed trades as well as introducing hundreds of new users to this forum and showing them the ropes is not investing anything in the forum or helping it get popular huh? When I started trading here people still laughed at you for accepting Bitcoin. People such as myself and Butter-zone helped CREATE this community, and we help hold it together today. It is a buyers responsibility to do due diligence with their trading partner. Anyone who bothers to do a search of their username wont have a problem finding scam accusations. This is why there is an entire section dedicated to it as well as trust ratings.
No one is limiting anyone's ability to point out misdeeds. You can criticize people almost anywhere on the forum. People trading here are only allowed to trade in their own ops in a very limited area that people insist upon invading for their own personal gratification, at the expense of the OP. Vetting your trading partners is YOUR RESPONSIBILITY. Allowing everyone in the marketplace to be harassed so that people like you can entertain yourself and be too lazy to verify your trading partners is an asinine strategy counter to producing a reliable trading environment. You claim his right to speak is being infringed and yet you demand Butterzone's right to speak against him be limited in the same breath. As a retailer of other people's trust ratings I really don't think you have any moral authority in this situation. Maybe he should choose who he trolls more carefully in the future and things like this wont be a problem.
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I believe that is correct. Because the forum is set to default 2 levels of trust, anyone who trusts you that is on that list also makes you part of the default trust tree.
This is not quite correct. The above people must go into their trust settings and add/remove you in order to add/remove you from default trust. The above people can leave positive feedback for you without adding you to default trust
Actually this is exactly what I said, you specified the same thing only with more detail of how it is accomplished.