Muphry's Law, as formulated John Bangsund of the Victorian Society of Editors (Victorian as in "from the Australian state of Victoria" not as in "pertaining to 1837-1901, the period concurrent with the rule of Queen Victoria") pertains to the inevitable petard-hoisting that occurs whenever you mention proofreading or editing.
1. if you write anything criticising editing or proofreading, there will be a fault in what you have written;Muphry’s Law (via Kottke)
2. if an author thanks you in a book for your editing or proofreading, there will be mistakes in the book;
3. the stronger the sentiment in (a) and (b), the greater the fault; and any book devoted to editing or style will be internally inconsistent.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.