It will be fun to watch as Bitcoin businesses began scrambling to distance themselves from U.S. citizens. The current examples like SatoshiDice are only the beginning. I don't think it will be long before many businesses realize that it's just not worth it to pick on the biggest bully in the schoolyard.
Unfortunate but true, many offshore banks, payment processors, e-currencies are now refusing to serve US customers.
It won't be long before US citizens are financially locked out of doing business with non US based financial companies.