Visiting a relative at her hotel this Saturday (she was in town for our family reunion), I noticed an events calendar taped to the inside of the door to her room. There were several typos on the calendar, and the urge to edit was overwhelming.
Grabbing a pen off the desk, I went to work. Punctuation was corrected. Extra spaces were closed up. It was quite satisfying.
Will my work be noticed by the next guest who inhabits Room 210? I doubt it. But acknowledged or not, I and my trusty pen dealt at least a glancing blow to poor grammar.