Yes I am, which is why sums of money showing up in my possession without a known source are problematic. What you describe already exists in Japan, but are of no use to me. Yes, I sell off personal items for the various systems versions of e-currency and use to buy other items sold in the system. For hobby goods, yeah this is fine, but to raise money to pay monthly bills, groceries and gas it is absolutely worthless as those are accepting any methods of payment other than cash, credit cards or automatic withdrawals from my bank accounts. Exchanging from these e-currencies to cash that has no providence attracts the attention of the anti money laundering agencies. Not good.