I have played one game with Wam. My type of play focuses on mindset, where I attempt to put myself in another person's shoes, as much as possible, and understand their play from their perspective. Failing that, I instead categorized them into a player archetype, and assess their behavior within that framework.
My last point about Wam was question why town!Wam gets suspicious of me in the first place. Why was I, someone who was not around at all, was someone he was thinking about when he had another angle to scumhunt with but chose not to pursue. Generally, when someone gets suspicious of someone else, it's because they see one of that person's posts and it sparks a new line of thought. But I had no recent posts, so there was nothing immediate to spark Wam's suspicion of me. My assumption then is that he likely went back through the thread and read one of my posts while doing that. That rereading was likely done in response to him being asked to elaborate on a statement ("scum might be using the massclaim discussion to fake content".)
So why is that scummy? Well, consider how you might be playing the game if you, like Wam, believed scum might use the massclaim stuff to talk about irrelevant things and look towny. Personally, I, before even sharing that thought, would have specific people in mind who might be abusing the massclaim talk, and I'd be looking at other things they were doing. I'd have names ready. Wam did not have those names ready, he made a suggestion ("scum might be doing "x") but had to look back through the thread to remind himself of who was doing "x." The original town thought process was missing.
Does that make sense?