"I have to admit, I used to be a fan of XBOX Live Achievements. Really. I was one of the early supporters for recording the milestones you've achieved during your conquests through videogamedom.
I remember the lunch time arguments about who had the high score in game a or b, or who had gotten all the Choas Emeralds in "Sonic the Hedgehog" or unlocked Super Sonic. Arguments usually went like this; Guy A, "Man the Rocket Launcher in "Resident Evil" was off the hook!" Guy B, "Yeah, and when you jumped off in the parachute and had to kill the Omega Tyrant - that was hot too!" Guy A. "Parachute? What parachute, there's no Omega Tyrant" Guy B, "Uh Huh! You gotta do six back flips during the final boss battle!"
Obviously Guy B was lying about his supremacy. But with Achievements you could "PROVE" that you did what you said you did. In theory…"