LessWrong can be reasonably characterized as a recruiting ground for pyramid schemes and/or a cult of personality. It is an attempt to reframe libertarianism as apolitical and as the only rational, correct course of action. Effective altruists are urged to donate to unaccountable AI research projects controlled by LW essayists.
For many reasons, I don't believe it's responsible to link people there.
Some starting points below, but please do your own research:
Full disclosure: I organize for LW Austin group.