September 24 was National Punctuation Day. Dang'it'all; I missed it. The web site has basic punctuation information and gruesome photographs of public punctuation errors (and basic grammar errors that they couldn't pass up) on signage. My favorite: Danger: Explosive Dog Training in Progress. Poor dogs. It would seem that the poor apostrophe is the most abused mark.

Here is an article about the man who started National Punctuation Day.