There's also a coupon code in this month's issue of "Flight Journal", which I'm sure all of us serious aviation enthusiasts read (my collection goes back to #1). Look near the back - its a full page, full-color advertisement with the coupon code down near the bottom. It'll get you an extra free week (that's 3 weeks of free flying instead of the usual 2).
And while you're waiting for your neck muscles to loosen up after hunching over a keyboard and joystick and gorging yourself on some free online flight time, read the article by Ethell about flying the P-38 in WW2, or the article about the Marauder pilots over the beach during D-Day.