While reading not.so.soft today, I was led to take this quiz on the difference between the Helvetica and Arial fonts. As I did quite poorly, and as I renounce Microsoft and all (well, most of) it's works I must now go and read up on the differences, so that I may spot the little imposter whereever it lurks.
(That said, while working on the redesign, I noticed that Arial had been set as the #1 default font. I never noticed, because my computer displays it in Helvetica anyway. Expect a change.)
