Akemi Iwaya is a devoted Mozilla Firefox user who enjoys working with multiple browsers and occasionally dabbling with Linux. She also loves reading fantasy and sci-fi stories as well as playing "old school" role-playing games. You can visit her on Twitter and Google+.
There are only 97 leap years in every 400 year interval (not 100 as one would expect) because every century year that can’t be evenly divisible by 400 is skipped in order to keep the calendar on track. For instance, 2000 was a leap year, but 1900 was not.