The law has not caught up to the technology. My opinion? It's certainly not "legal," but you might well be hard pressed to find a law to find where it is "illegal." The irony here is, that's almost exactly the situation with online poker in the US...no law says it is illegal, as all they would have to do is pass one that said so. The Wire Act, which many use to say it is illegal, is hopelessly outdated, as hardly anyone uses phone lines anymore to play. In closing, I'd say it's "legal" in so far no one is going to come after your son, much like no one does time for playing poker online...many pros get paid handsomely to rep sites, and are often in public. More than half the field for the WSOP qualified online, and you can trace that, sites collect SS numbers now. The US will either convince Paypal and the like to stop funding, or convince Russia to shut them down. Until then, the lack of illegality makes me say it's legal for all intents and purposes...until they catch up.