I just reviewed my Alaska June statement on line and found that 7 out of the 9 flights I took on Alaska during June were short mileage. A kiosk bonus here, a web bonus there, and one whole flight was just not entered. I was short a total of 3,850 miles for the month. They are great about crediting the miles when I call, but this happens every month.

Do all airlines have to be "watched" this carefully? Which ones do a great job and which are the worst offenders?