Remember when id Software ran that Facebook promotion whereby RAGE HD on iPhone would go free if 100,000 peeps 'Liked' the studio's page?

Well, Aussie developers Halfbrick have gone one better.

If you should happen to be out social networking this afternoon, why not put that webcam down and pop across to the official App Store page.

For there, you will discover riches beyond your wildest dreams. Or more accurately, Halfbrick's phenomenal endless-flying game Jetpack Joyride ready to be downloaded for absolutely zip.

The star of Halfbrick's one-touch wonder, Barry Steakfries, by the way, was recently joined by Honest Phil in a major update - presumably, Barry was feeling lonely.

Jetpack Joyride is free. Grab it now. I mean, you're probably already logged into Facebook, anyways, aren't you?

You two-timer, you.