They never actually discuss issues head-on or provide constructive input, generally avoiding citation of references or credentials. Rather, they merely imply this, that, and the other. Virtually everything about their presentation implies their authority and expert knowledge in the matter without any further justification for credibility.
They tend to pick and choose opponents carefully, either applying the hit-and-run approach against mere commentators supportive of opponents or focusing heavier attacks on key opponents who are known to directly address issues. Should a commentator become argumentative with any success, the focus will shift to include the commentator as well.
They tend to surface suddenly and somewhat coincidentally with a new controversial topic with no clear prior record of participation in general discussions in the particular public arena involved. They likewise tend to vanish once the topic is no longer of general concern. They were likely directed or elected to be there for a reason and vanish with the reason.
They tend to operate in self-congratulatory and complementary packs or teams. Of course, this can happen naturally in any public forum, but there will likely be an ongoing pattern of frequent exchanges of this sort where professionals are involved. Sometimes one of the players will infiltrate the opponent camp to become a source for straw man or other tactics designed to dilute opponent presentation strength.
They almost always have disdain for ‘conspiracy theorists’ and, usually, for those who in any way believe JFK was not killed by LHO. Ask yourself why, if they hold such disdain for conspiracy theorists, do they focus on defending a single topic discussed in a NG focusing on conspiracies? One might think they would either be trying to make fools of everyone on every topic, or simply ignore the group they hold in such disdain. Or, one might more rightly conclude they have an ulterior motive for their actions in going out of their way to focus as they do.
An odd kind of ‘artificial’ emotionalism and an unusually thick skin — an ability to persevere and persist even in the face of overwhelming criticism and unacceptance. This likely stems from intelligence community training that, no matter how condemning the evidence, deny everything, and never become emotionally involved or reactive. The net result for a disinfo artist is that emotions can seem artificial.
Most people, if responding in anger, for instance, will express their animosity throughout their rebuttal. But disinfo types usually have trouble maintaining the ‘image’ and are hot and cold with respect to pretended emotions and their usually more calm or unemotional communications style. It’s just a job, and they often seem unable to ‘act their role in character’ as well in a communications medium as they might be able in a real face-to-face conversation/confrontation. You might have outright rage and indignation one moment, ho-hum the next, and more anger later — an emotional yo-yo.
With respect to being thick-skinned, no amount of criticism will deter them from doing their job, and they will generally continue their old disinfo patterns without any adjustments to criticisms of how obvious it is that they play that game — where a more rational individual who truly cares what others think might seek to improve their communications style, substance, and so forth, or simply give up.