I told an intelligent, well-educated friend about Less Wrong, so she googled, and got "Less Wrong is an online community for people who want to apply the discovery of biases like the conjunction fallacy, the affect heuristic, and scope insensitivity in order to fix their own thinking." and gave up immediately because she'd never heard of the biases.
While hers might not be the best possible attitude, I can't see that we win anything by driving people away with obscure language.
Possible improved introduction: "Less Wrong is a community for people who would like to think more clearly in order to improve their own and other people's lives, and to make major disasters less likely."
I can’t tell from Nancy’s anecdote, but it is possible that her friend couldn’t follow the links on the home page, because she was actually on the Google search page:
The sentence’s wording without links is important because Google quotes it in plaintext.
Well, the sentence's wording without links is important, but maybe if your friend suggests a site, you can try not being so lazy as not clicking the link to the page.