Re: == Bitcoin challenge transaction: ~1000 BTC total bounty to solvers! ==UPDATED==
It was a good idea to contact them, "Hi guys, we will post easy-to-break TX with 6.7BTC one day, be ready!" 
It was exactly what I thought.
But in theory a well documented transaction could make them think it twice before move something, they has more to lose than 6.7 btc