I think that most people have gotten the clue, but just in case, read the anti-comic sans manifesto.

"In 1995 Microsoft released the font Comic Sans originally designed for comic book style talk bubbles containing informational help text. Since that time the typeface has been used in countless contexts from restaurant signage to college exams to medical information. These widespread abuses of printed type threaten to erode the very foundations upon which centuries of typographic history are built."

UPDATE: I can't believe it. I just opened a big Lotus Notes database here at work that we use to track the next release of our product, and of course it is full of bold comic sans! The one thing you can do to make it more unreadable and less authoritative is to bold it.