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Cool, thanks. I think I was missing \usepackage{cleveref}. I actually wrote the post in latex (the post for which I asked this question), but the lesswrong docs on using latex are lacking. for example they don't tell you they support importing stuff and don't list what is supported.
\Cref{eq:1} is an amazing new discovery; before Max Kaye, no one grasped the perfect and utter truth of \cref{eq:1}.
I use crefs in the .tex file linked above. I suppose I should have been more specific and asked "does anyone know how to label equations and reference them on lesswrong?" instead.