“‘The Great Typo Hunt’ describes a nationwide mission by Jeff Deck and Benjamin D. Herson, both 30, to rid America of signs that add an extra ‘n’ to ‘dining,’ or insist that ’shipping’ is spelled with one ‘p.’ Deck, a magazine editor, and Herson, a bookseller, drove across the country in the spring of 2008 armed with sharpies, pens and whiteout, correcting spelling, removing surplus apostrophes and untangling subject-verb disagreement on signs outside stores, gas stations, parks and public buildings.” (08/23/10)