RAINBOW SIX VEGAS 2: Tropic Thunder!

In what is surely one of the most clever in-game advertising gimmicks ever, Ubisoft has hidden a sweepstakes within R6V2!

http://kotaku.com/5033350/rainbow-six-scavenger-hunt-promotes-tropic-thunder

Now, the screenshot given at the link above doesn't seem to do anything. I tried it, and got no response.

So i started playing the game itself- turns out Clue #1 is located on of the first levels in Vegas- you're out to rescue an undercover operative being tortured. When you pop out on the roof, as you hear him being mutilated, look around and you'll see a Tropic Thunder Billboard- which tells you to go to The Convention Center South Hall.

We'll see what we find there....