[il]

Even if you avoid fraud and the payment processors, the US government will almost certainly shut you down. They don't like competition.

See e-gold,1mdc, Liberty Reserve,Phoenix Dollar,etc,etc - pretty much anyone who has tried to create an alternative currency or payment system.

[tudorw]

anyone accepting bitcoin?

[pinksoda]

If you comply with state, federal and any other involved regulatory agency then you'll be fine. Payment systems can have a huge impact on the entire economy, create new businesses, and drive existing business growth.