The original founder Erik Voorhees was American but has since sold the site for 126k BTC and now lives in Panama. A few months prior to selling the site US IP addresses were banned due to legal concerns.
The bigger legal issue, so far, besides the gambling and the one they actually got in trouble for was for selling unregistered securities to the investors. He got a 15k USD fine for that.
That's Satoshi Dice, one of the first popular Bitcoin gambling games. It's very similar but differs from Just-Dice in at least three ways:
1) The house edge is 1.9% rather than 1%
2) Every bet is a transaction on Bitcoin's blockchain. So the rapid-fire style betting of Just-Dice is not possible as each bet needs to be verified.
3) The investment model was through shares that paid dividends. On months the site ran at a loss, a dividend was not paid.
The anonymous Dooglus ran statistical analysis of Satoshi Dice for almost a year on the Bitcoin forums (to verify its odds were honest), then started Just-Dice as an experiment in a different investment model.
Dooglus lived in Canada and closed the site due to a new virtual currency law there several months ago. He also ran the site Doge-Dice. He left the two sites running just so investors and gamblers could withdraw all their deposits, but new deposits and bets could not be made (almost the exact opposite of what happened at MtGox when it shut down).
