Thank you for your original advice. It's definitely useful. But it's not relevant today.

I don't wish to link the Bitcoinica fiasco with my leave because I sold Bitcoinica a few months ago. And I lost my control in January. Basically everything didn't go as I planned. (I'm VERY conservative about wallet security.)

I wanted to build an independent exchange system to replace hedging, so that most funds can stay offline. But the new owner didn't like the idea.

I know it failed like predicted, but my involvement in the failure is highly limited. I sold the site for the same reasons: What if someday I'm hacked, or caught? (The valuation (P/E) was less than 1!)

I'm a web developer, not a security expert. I know how to protect the API keys but I'm not good at encrypting a wallet.dat. That's all I thought since day one.