Greek Bonds can get you 0.5%/week.
Pirate 'might' be safer though.

Hey,
I can get a crate of 100 Ipads from China for $200/each. I don't have the money this week, but can sell them for $400/each within the week. I need someone to lend me $20,000. I'll give you back $21,400 next week. 7%. I'll just keep the extra $18,600.
Next week, I might be able to get 2 crates, some with my money, and some with another loan.
Point being RETAIL businesses have huge MarkUps. Earning 7% per week is nothing in retail. The profit depends on the overhead.
Franchises usually operate in 3% for the Franchisee. Not per week but overall for each and every sale. Per hour, per day, per week, per month, per year.
Just trying to show that the 'rate' isn't crazy. Sustainability will be 'ONCE' the market is saturated with Ipads.
And that is just Retail, now think ComEX.
Is it possible to be an 'illegal' operation? Yes. Is it possible for it to be a legal operation? Yes.
But gossip and fud goes over so much better.
Take a seat on the fence and watch the show.
Mystery Science Theater 2000.