A Comma Runs Through It

It looks as if I have something in common with judge and Supreme Court nominee Sonia Sotomayor: As William Safire reports in yesterday's NYT Magazine, "'Each time I see a split infinitive,' she is on record as saying, 'an inconsistent tense structure or the unnecessary use of the passive voice, I blister.'"

She doesn't mention comma splices, however.

This sign actually has a lot of grammatical challenges — but the one that bugs me the most is that a comma runs through it, a comma where there shoul