Very similar to the Thread Killer, the Threadsecutioner is an individual who kills an online discussion. Whether on a message board or a comment on a Facebook wall post, the threadsecutioner's contribution almost always ends the discussion.
The threadsecutioner's intentions are pure, but his actions are disastrous.
Commenter 1: Climate change is absolutely real! The vast majority of scientists agree on that!
Commenter 2: The science is flawed, and there's a significant number of scientists who think it's all bogus!
Threadsecutioner: Hey guys, here are 16 links to stories about this very topic!