Is it legal to allow website members to earn virtual currency and then cash out?

Is it legal to allow website members to earn virtual currency online, pay each other in exchange for other services or even USD ?|||Probably not, however if they are gambling with that virtual currency, it might not be legal.|||Get paid for receiving sms messages on your mobile phone. It is as simple as a..b..c. You have to just register your mobile phone and get paid for every message you receive! Visit http://tinyurl.com/288cfap