[csense]

I'm guessing that offering the service to other countries -- with different employment law, taxes, contracts, immigration, etc. -- means a ton of red tape this service has to navigate. Not dealing with it until they get a revenue stream from US business and can afford to pay experts to examine these rules closely sounds like a great strategy.

Yes, it's not fun if you're non-US and you want to take advantage of this service. I'm sure that, if it's a viable way to match employers with employees, someone will eventually get around to providing the service in your country.