I appreciate that Kadavy actually delves into the technical deficiencies of Comic Sans before he gets to the real heart of the matter at the end.

He misses the larger 'hacker design' point, however - unless you are an experienced designer, you are much better off picking a standard classic font, such as Helvetica, than trying to get all 'design-y' and picking some weird display font, in the mistaken belief that somehow this is adding 'personality' to your design.