That would be awesome! Sadly Long Bets makes you donate the winnings to charity to avoid prosecution as an illegal gambling site. Now if you happened to own a charity...

Haha, I wonder if they could use Bitcoin as their prevailing currency and avoid that problem altogether.

Actually, I think the bet may have been worded so that if gold gains 2% and bitcoin gains 200%, the bet is won. This makes it substantially harder to arbitrage.

Better you invest $100 or $5k.