Chris Bertram at Crooked Timber:
Ten types of commenter, of which the last are the rarest.
The commenter who has not read the post properly, decides they know what it says anyway, and fires off a series of disgusted observations.
Commenter who applies the most uncharitable possible interpretation to the post, and goes straight into rant mode.
The commenter who takes the opportunity to make some sarcastic remarks highlighting his (99% of cases are male) own superior scholarship/intelligence and damning the CT author. “If only Chris has read the second treatise of Heinrich von Pumpkin in the original German, he’d be aware ….”
The commenter who uses every comment as a peg on which to hang his (yes, “his”) own obsessions about, e.g. analytical philosophy, populism, Palestine, etc
The commenter who simply wants to make nasty personal remarks about the CT author, often about female members of the collective, often using an alias.
More here.