I totally agree with you; that's why I'm here!
But personally, I know a lot of fairly smart, moderately well-educated people who just aren't very interested in a life of the mind. They don't get a lot out of studying philosophy and math, they read a little but not a lot, they don't seek intellectual self-improvement, and they aren't terribly introspective. However, they all have a passing interest in current events, technology, economics, and social issues; the stuff you'd find in the New Yorker or Harper's, or on news aggregators. Hanson's writing on these topics is exactly the sort of thing that appeals to that demographic, whereas Less Wrong is just not.
It seems unusual that people would have a passing interest in technical issues in economics but not psychology.
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