All these guys did was show a iPhone 3G on a non-supported carrier and claim they unlocked it. Since it's been sold unlocked and they never show how they did it, I reckon it as scam.
In this post, DevTeam's Zf explain why this not such a "solution":
Last edited by iPhabio; 07-15-2008 at 11:45 PM. Reason: typo
"You tried your best and failed miserably. The lesson is: never try."
If you own a Turbo SIM and a 3G iphone, check that post http://www.hackint0sh.org/forum/showthread.php?t=45903 to try to reproduce their claims and see if it's yet another scam, or an epic Apple fail