To be honest, the first moment I saw the page, it did seem to give my eyes a negative reaction, but after reading a few of the results, it started to look fine pretty quickly.

Nice! Also works with Courier and Comic Sans, but, sadly, not with Helvetica.

And Arial, Calibri, Georgia, and Cambria. It's missing Linux Libertine fonts, though. So typical.

Wingdings would have been nice.

I think it mostly depends on what we're used to and what our associations are.

Many computer science people I respect are huge typeface nerds, but personally I could never see much value in focusing on it.