A commenter at Kids Prefer Cheese demonstrates the application of heuristics to Internet dialogue:
You know how people use cognitive short-cuts to make sense of the world? For example, I could go read Ransom’s entire blog, probably do a bunch of background reading on Austrian business cycles, and then figure out whether he’s right about Cowen. Or I could use a simplifying heuristic which goes like this: people who post in all caps in blog comments are usually wingnuts. Sorry, Ransom, maybe you’re right, but in my book you’ve already lost on style points.