It is not safe. If you bought clams at 0.006 now you are losing 50% of the investment if you want to convert that clams into btc or fiat due to the exchange rate.
This is a good point, there are two risks, the veracity of the site operator and the value of the underlying coin.
However, this risk is present with bitcoin as well, since its price varies versus national currencies such as the USD.
I think the value of the underlying crypto currency is a separate issue though. As far as things that JD can control, I think they are about as safe as you can find in the crypto currency world these days.
Maybe you can make the point though that if JD shuts down again the value of clams drops a lot since that is the main use for them. I think they were like 30K satoshi before JD reopened. That would be some kind of risk specific to JD.
Still, as BAC has pointed out, you can probably dig up some clams for free if you were in crypto back in May and try it for yourself.
Good Luck!
