Is it already in production? Making money/creating value? Refactor. No, this is not a rule of thumb. But an app already in production has a lot of little quirk

Is it already in production? Making money/creating value? Refactor. No, this is not a rule of thumb. But an app already in production has a lot of little quirks already ironed out. That report one person really needs every third Friday of the month. When an Korean speaking costumer on a Spanish Windows Vista 64bits running Flash 7.0 reported a bug on Internet Explorer 6 with Norton blocking the referer. Code has knowlegde. Use it.